Time required to melt paraffin is [tex]t_{m} =4660s = 1.29 hours[/tex]
What is liquefaction?Liquefaction is the term for the phase transitions from solid to liquid (melting) and from gas to liquid (condensation, respectively). The temperature and pressure at which a solid transforms into a liquid is known as the melting point (sometimes referred to as the liquefaction point).The time taken to liquify the paraffin,
[tex]T= 27.4^{o}[/tex]
so, [tex]\frac{T-T_{0} }{T-T_{1} } = exp(\frac{-PidLb}{mxcp} )[/tex]
Here, the Reynolds number is donated by [tex]R_{eD}[/tex].
So, [tex]R_{eD}[/tex] = [tex]\frac{4m}{pi*D*m}[/tex]= [tex]\frac{4*0.1}{pi*0.025*467*10^{-6} }[/tex]
Therefore, [tex]R_{eD}[/tex] = 10,906
h = ?
Given, water flow rate = 0.1 kg/s
so, [tex]h = \frac{NneudK}{D} =\frac{k}{D} *00.023*R_{eD}^{4/5}* P^{0.3} _{o}[/tex]
=[tex]\frac{0.653}{0.025} *0.023*10906^{4/3} *2.99^{0.3}[/tex]
therefore, 'h' = [tex]1418\frac{w}{m^{2}* k}[/tex]
so, [tex]T_{0} =T-(T-T_{i})exp(\frac{piDlh}{mcp} )[/tex]
by substituting, we get
[tex]T_{0}=27.4-(27.4-60)exp(\frac{-pi*0.25*3*1418}{0.1*4185})[/tex]
Therefore, [tex]T_{0}=42.17^{o}[/tex]
As per the balance energy equation, we get
[tex]q=h_{i} C_{p} (T_{i} -T_{0} )=0.1*4185*(60-42.17) = 7500 watts[/tex]
with the help of balance energy, we can calculate the time required to melt paraffin
so, [tex]q*T_{m} = P_{v}h_{s} f[/tex]
[tex]=PL(wH-\frac{pid^{2} }{4})h_{s} f[/tex]
so, [tex]T_{m} =(770*3)* \frac{(0.25*\frac{0.25^{2} -pi}{4} *0.025)^{2}}{750} h_{s} f[/tex]
Therefore, time required to melt paraffin is [tex]T_{m} =4660 seconds= 1.29 hours[/tex]
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technician a says that rotors should be measured for thickness variation (parallelism). technician b says that rotors should be measured for lateral runout. who is correct?
Brake rotor micrometer. Parallelism is when the thickness of the rotor varies from point to point.
The parallelism of the brake disc allows the piston to move in and out of the caliper body when pressure is applied. The maximum allowable runout of the rotor friction surface is 0.002 inches (0.050 mm) as specified by most manufacturers.
Steering axle brake pad thickness must be a minimum of 3.2 mm (1⁄8 inch) for air disc brakes and a minimum of 1.6 mm (1⁄16 inch) for hydraulic disc, drum and electric brakes . Runout occurs due to eccentricity (processing error) and axial bending. Both cause uneven distribution of mass around the axis of rotation. Both create destructive forces, cause misalignment, and reduce machine life. Both problems can be serious,
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a fatigue test was conducted in which the mean stress was 60 mpa (8702 psi), and the stress amplitude was 230 mpa (33360 psi). (a) compute the maximum stress level. mpa (b) compute the minimum stress level. mpa (c) compute the stress ratio. (d) compute the magnitude of the stress range. mpa
The ratio of the least to highest stress is known as the stress ratio. 345 mpa is the greatest stress level.
Explain about the maximum stress level?
The mean stress is 60 mpa. The highest tensile stress and the minimum compressive stress, respectively, are denoted by the words "maximum stress" and "minimum stress." The stress range was established using the absolute difference between the highest and lowest stress.
Maximum stress level = 1/2 of the maximum and minimum stresses.
Then,
60 = 1/2 (Maximum stress minus Minimum stress)
230 = Maximum Stress plus Minimum Stress - (1)
As opposed to that,
Amplitude is= half of the maximum and minimum stresses.
120 = 1/2(Max. stress - Min. Stress) (Max. stress - Min. Stress)
460 equals Maximum Stress - Minimum Stress - (2)
Solving equations (1) and (2) yields:
Equation (1) + (2) 230 = Maximum stress + Minimum stress
460 = Maximum stress - Minimum stress
690 = 2 Maximum stress
690/2 = 345 mpa
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technician a says that the starter control circuit includes the ignition switch, neutral safety (clutch) switch, and solenoid. technician b says that the power circuit includes the battery, battery cables, solenoid, and starter motor. who is right?
Both technician A and technician B are right.
The starter control part contains the ignition switch, neutral safety switch, and solenoid. Meanwhile, the power circuit includes a power source to drive electrical current around the circuit (a battery) A conductor to carry the current around the circuit (some cable) A load that has resistance (a bulb, a heating element, a motor, etc.)
The starting system offers a step of rotating (cranking) the vehicle's internal combustion engine (ICE) to start the combustion cycle. The starting system includes the battery, cables, a solenoid, a starter motor, a ring gear, and an ignition switch.
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kalpakjian and schmid, problem 5.70. a 75-mm thick square plate and a right circular cylinder with a radius of 100 mm and height of 50 mm each have the same volume. if each is to be cast using a cylindrical riser, will each part require the same size riser to ensure proper feeding? explain.
Here, it is evident that a square plate requires more time than a cylinder. Therefore, a larger riser will be needed, and there will be a range of sizes for the riser.
We are aware that the time required for solidification equals C(volume/area), where C is a constant.
volume of cylinder = r2h where r = 100mm = 0.1 m and h = 50mm = 0.05 m
Cylinder volume = (0.1)
²×0.05 =0.00157m³
the cylinder's total surface area is equal to 2r² + 2rl (0.1)
Time taken for the cylinder = C(Volume/Area) = C(0.00157/0.0942) = (2.78 10⁻⁴)C since 2 + 2(0.1)(0.05) = 0.0942 m2.
For a square plate, h = 75 mm = 0.075m, l = b = x, and x = 0.144m. Accordingly, l = b = 0.144m, and the volume of the square plate is equal to 0.0157 m³ [A/C to inquiry].
Total surface area is equal to 2 (lb + bh + hl) (0.144)
Time taken for a square plate equals C(volume/area) = C(0.00157/0.0847) = (3.43 10⁻⁴)C because 2 + 4 (0.144) (0.075) = 0.0847 m³
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How many different welding processes are in use?
There are basically five types of welding namely:
a)Gas Metal Arc Welding (GMAW/MIG)
b)Friction welding,
c)ELECTRON BEAM WELDING
d) LASER BEAM WELDING
e) RESISTANCE WELDING
What is welding?
Welding is a fabrication process in which two or more parts are joined together using of heat, pressure, or both to form a joint as the parts cool. materials to be welded include metals, thermoplastics, and wood.
Types of welding processes
a)Gas Metal Arc Welding (GMAW/MIG)
Used mainly for joining metals like stainless steel, nickel, copper alloys, aluminum, titanium, and cobalt.
b)Friction welding
This is a technique used to join materials using mechanical friction. this can be used to join wood, steel, and aluminum.
c)ELECTRON BEAM WELDING
This process uses a mean of high-velocity electrons to combine materials this can be used to join thick sections in the aerospace, automotive, rail, and nuclear power industry.
d)LASER BEAM WELDING
this is used to combine pieces of metal or thermoplastics.
e) RESISTANCE WELDING
This is a process that joins metals by applying pressure and passing a current through them for a period of time.
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ase 8. while discussing the causes of a rich air-fuel ratio: technician a says that a rich air-fuel ratio may be caused by low fuel pump pressure. technician b says that a rich air-fuel ratio may be caused by a defective coolant temperature sensor. who is correct?
Answer:
technician
Explanation:
What is the definition of a rural area according to china and Europe?
An undeveloped country learns what from developed countries with regards to rural settlement and how do developers countries develop their areas? Which legislations can be implemented to achieve rural settlement planning?
The definition of a rural area according to China and Europe is: one in which more than half of the population resides in rural grid cells, as measured by the degree of urbanization.
What is a rural area?A rural area, sometimes known as the countryside, is a geographical area located outside of towns and cities.
Rural areas often have a low population density and tiny communities. Agricultural and forestry regions are sometimes referred to as rural.
Cities, suburbs, and towns are all examples of urban environments. Villages are sometimes referred to as rural places.
Cities have seen increased growth in terms of infrastructure and connectivity, such as airports, ports, railroads, housing, and roadways. Infrastructure development in rural regions is typically limited.
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Tyler is developing a robot that can be sent into war zones to ensure that any mines have been detonated before soldiers are sent into the area. The government is requiring a full scale model of this robot before it is willing to purchase one
The reason a prototype is necessary before committing to a purchase in this scenario is that the robot might be very expensive.
What is a prototype?In Engineering, a prototype can be defined as a rudimentary (early) model, release, or sample of a particular product, so as to avail the developers and manufacturers an opportunity and ability to test a concept, functionality, or process within it.
This ultimately implies that, the main purpose of the prototype of a robot is to determine and show whether or not the robot and all of its features are in tandem with the design specifications and market requirements.
In this context, we can reasonably infer and logically deduce that the government requested for a full scale model of the robot before it would purchase one because it is most likely to be very expensive.
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Complete Question:
Tyler is developing a robot that can be sent into war zones to ensure that any mines have been detonated before soldiers are sent into the area. The government is requiring a full-scale model of this robot before it is willing to purchase one.
What explains why a prototype is necessary before committing to a purchase in the following scenario?
an automotive air conditioner produces a 2-kw cooling effect while consuming 0.75 kw of power. what is the rate at which heat is rejected from this air conditioner?
The rejected by the air conditioner system is 2.75 kilowatts.
An air conditioner system involves a refrigeration cycle. It uses power to get heat from the cold reservoir before sending it to the hot reservoir. The model is described by the First Law of Thermodynamics:
QL+W-QH=0
Where:
QL- Heat rate from the cold reservoir, measured in kilowatts.
QH = Heat rate liberated to the hot reservoir, measured in kilowatts.
W = Power input, measured in kilowatts.
The heat rejected is now cleared:
QH=QL+W
If QL=2kW and W=0.75kW
QH=2.75kW
The rejected by the air conditioning system is 2.75 kilowatts.
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An example of an external irreversibility associated with the Rankine cycle is
a. expansion of the working fluid through the turbine.
b. frictional effects resulting in pressure drops.
c. combustion of fuel.
d. irreversibilities in the pump.
An example of an external irreversibility associated with the Rankine cycle is combustion of fuel. Option C is correct.
What is the Rankine cycle?The Rankine cycle is defined as a modified thermodynamic cycle that describes how certain heat engines, such as steam turbines or reciprocating steam engines, extract mechanical work from a fluid as it passes between a heat source and a heat sink.
The Rankine cycle, also known as the Rankine Vapor Cycle, is a process that is widely used in power plants such as coal-fired power plants and nuclear reactors. The best example of an external irreversibility associated with the Rankine cycle is combustion of fuel.
Therefore, option C is correct.
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The program will take two integers from the user, say n1 and n2. It will then call the method sum(n1, n2) to calculate the sum of all numbers between n1 and n2, inclusive. The answer returned by the sum( ) method will then be displayed on the screen. For example, if the user enters 5 and 9, the program will print the value of 5+6+7+8+9. On the other hand, if the user enters 5 and -2, the program will print the value of 5+4+3+2+1+0+(-1)+(-2). Note: Do not assume the user will always enter the smaller number first.
The Java program will take two integers from the user and we are not assuming the user will always enter the smaller number first.
Step-by-step coding of the given problem:
import java.util.*;
class main{
public static void main(String args[])
{int n1,n2;
Scanner in=new Scanner(System.in);
System.out.print("Enter the starting number: ");
n1=in.nextInt();
System.out.print("Enter the ending number: ");
n2=in.nextInt();
System.out.println("The sum of the numbers from "+n1+" to "+n2+" is "+sum(n1,n2));
}
public static int sum(int n1, int n2)
{int i,sum=0,start,stop;
start=n2;
stop=n1;
if(n1<n2)
{start=n1;
stop=n2;
}
for(i=start;i<=stop;i++)
sum+=i;
return sum;
}
}
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is it possible to create something that no one else has created before the near future
Answer:yes
Explanation:
That's what other people done they've created something no one else thought of.
the small-signal model is said to be valid for voltage variations of about 5 mv. to what percentage current change does this correspond? (consider both positive and negative signals.) what is the maximum allowable voltage signal (positive or negative
The signal is "high" when it is over the high threshold. Undefined intermediate levels lead to extremely implementation-specific circuit behavior.
It is customary to allow for some tolerance in the voltage levels utilized; for instance, logic 0 might be represented by 0 to 2 volts, and logic 1 by 3 to 5 volts. An example of a widely used signal standard is 0-10 volts, which states that a signal of 0 volts represents 0% of the measurement, a signal of 10 volts represents 100% of the measurement, a signal of 5 volts represents 50% of the measurement, and so on. For a "low" logic state and a "high" logic state, respectively, acceptable input signal voltages range from 0 volts to 0.8 volts and 2 volts to 5 volts. The supply voltage will, for the most part, determine the operating range.
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Technician A says that a tapered roller bearing assembly has less rolling resistance than a similarly sized ball bearing assembly. Technician B says that the bearing assembly in a unitised wheel bearing assembly can normally be disassembled, cleaned, and repacked. Who is correct?
Technician A says that a tapered roller bearing assembly has less rolling resistance than a similarly sized ball bearing assembly. Technician B says that the bearing assembly in a unitized wheel bearing assembly can normally be disassembled, cleaned, and repacked. The technician that is correct is Technician B.
What is a Tapered Roller Bearing Assembly?A cup and cone assembly is used in tapered roller bearings. The cup is made up of the outer ring, and the cone assembly is made up of the inner ring, rollers, and cage. This bearing design accommodates combined loads while maintaining minimal friction during operation.
A roller bearing is a cylindrical element that allows a bushing or bearing block to move with little friction.
A ball bearing is a spherical unit with the same purpose as a roller bearing. The real distinction is the contact surface between the bearing and the rail.
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part b - designing and analyzing a series rl low-pass filter using the available 130 h inductor, what is the value of the resistor needed to make a low-pass filter with a cutoff frequency of 18 hz ? express your answer to three significant figures and include appropriate units. g
When built, an RL circuit functions as a low pass filter. The resistor is the shunt component in the circuit, and the inductor is the series component.
The inductors' reaction to a rise in operating frequency is what causes the circuit's filtering operation. The frequency at which the output (load) voltage is equal to 70.7% of the input (source) voltage is known as the cutoff frequency for a low-pass filter. An audio signal processor called a low-pass filter (LPF) takes out undesired frequencies from a signal that are above a preset cutoff frequency. It allows the low-end to flow through, ideally unchanged, while gradually filtering out (attenuating) the high-end over the cutoff frequency.
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What type of drum system is mostly to be found on the rear of a modern front wheel drive vehicle ?
Drum Brakes are mostly to be found on the rear of a modern front wheel drive vehicle.
What Is Drum Brake?
Drum brakes have been around since 1900 ,patented until 1902 by Louis Renault.
A drum brake is a brake that , causes friction caused by a set of shoes or pads that press outward against a rotating cylinder-shaped part called a brake drum.It rotates at the same speed as the wheel. The drum surrounds a set of brake shoes that are coated in materials that generate friction.Types of drum brakes
Leading/Trailing Shoe type. Twin-leading shoeDuo Servo.To know more about drum brakes from the given link
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Two forces are acting at an angle of 120. The bigger force is 40n and the resultant is perpendicular to the smaller one. The smaller force is
The smaller force is 20 Newtons.
Let, the magnitude of the smaller force be F Newton.
Now, the resultant force makes an angle of 90° with the smaller force. So, the angle between the resultant force and the larger force =
(120° - 90°) = 30°.
So, tan 30° = (F * sin 120°) / (40 + F * cos 120°)
(1 / √3) = {F * (√3) / 2} / {40 + F * (- 1 / 2)}
80 - F = 3F
4F = 80
F = 20.
So, the magnitude of the smaller force is 20 Newtons.
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what is the thermal efficiency of a rankine cycle with isentropic compression and expansion for which steam leaves the boiler as saturated vapor at 6 mpa and is condensed at 50 kpa? how does this efficiency compare the theoretical carnot efficiency? hint: draw a thermodynamic sketch of the process and look online for useful steam tables.
The carbon footprint of a building is greatly decreased by a thermally efficient building shell. 30% is the thermal efficiency.
Explain about the thermal efficiency?The proportion of heat energy that is converted into work is known as a heat engine's thermal efficiency. Even the most efficient heat engines have low efficiency; typically below 50% and frequently much lower. As a result, heat engines' energy loss to the environment represents a significant waste of energy resources.
When heat enters the boiler, the water goes through a sequence of state and energy changes before producing power through the turbine. This is known as a Rankine cycle.
We first determine the enthalpies for each state.
state 1
P = 6000 kpa x = 1 quality
h1=2784kJ/Kg
s1=5.889KJ/kgK
state 2
P=50kPa where entropy 1 Equals entropy 2
h2=2041kJ/Kg
state 3
P = 50 kpa x = 0 quality
h4=h3=340.5kJ/Kg
30% efficiency
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Which of the following best describes a fiscal policy tool?
a. government spending
b. financial capital markets
c. bank lending
d. household spending
The element or factor which best describes a fiscal policy tool is: a. government spending.
What is a fiscal policy?A fiscal policy is sometimes referred to as monetary policy and it can be defined as the strategic use of government revenues and expenditures, in order to influence and control macroeconomic conditions such as:
Aggregate demand (AD)Money supplyEmployment within a country.InflationThe types of fiscal policy.Generally speaking, there are two (2) main types of fiscal (monetary) policy that are typically used across the world and these include the following:
Expansionary fiscal policy.Contractionary fiscal policy.In conclusion, we can reasonably infer and logically deduce that government spending is an element which is used as a fiscal policy tool to influence and control macroeconomic conditions.
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Answer:
A) government spending is the correct answer
Explanation:
(econ 1101)
Consider the following expression BNF:
::= + | - |
::= * | / |
::= | ( )
::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
Using recursive descent, and only recursive descent, scan expressions that adhere to this BNF
to build their expression tree; write an integer valued function that scans the tree to
evaluate the expression represented by the tree.
There are plenty of clever programs online that you can download to evaluate arithmetic
expression tree; if you want zero in this assignment, download one and submit it as
programming assignment #2; if you want a grade greater than zero, please follow our
instructions. Thanks.
Input:
• A numeric expression adhering to this BNF.
Output:
• Some representation of the expression tree.
• The result of evaluating the expression.
The program will be:
import java.io.IOException;
import java.util.Scanner;
/* This class represents a Node in Expression Tree that will contain a digit(symbol) and will have links to its
* left and right childs, which would be recursively having its own left and right sub childs accordingly
*/
class Node {
public char data; // Store Node Data
public Node leftChild; // pointer to left sub tree
public Node rightChild;// pointer to right sub tree
// Constructor to initialize Node with data
public Node(char x) {
data = x;
}
// display the Node's data stored
public void displayNode() {
System.out.print(data);
}
}
/* This is Stack class (Stack1) which performs push(), pop(), isEmpty() operation on Node's data */
class Stack1 {
private Node[] a; // Stack of type Node
private int top, m; // top = top of stack variable, m = Maximum Size of the Stack
public Stack1(int max) {
m = max;
a = new Node[m];
top = -1;
}
What is a have program?Java is a popular object-oriented programming language and software platform that powers billions of devices such as notebook computers, mobile devices, gaming consoles, medical devices, and many more.
Java's rules and syntax are based on the C and C++ programming languages. The program is illustrated based on the information.
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a battery high rate discharge (load capacity) test is being performed on a 12 volt battery. technician a says that a good battery should have a voltage reading of higher than 9.6 volts while under load at the end of the 15-second test. technician b says that a battery conductance tester is often used to load the battery to two times the cca rating of the battery. who is right?
Technician A is correct.
What is CCA rating ?The battery industry uses the CCA rating to describe a battery's capacity to start an engine in cold weather. A 12-volt battery's rating is the maximum amount of amps it can produce for 30 seconds at 0°F while maintaining a voltage of at least 7.2 volts.
What is Load capacity ?The highest force that may be delivered to a stage in a given direction while still satisfying stage requirements is known as the load capacity. This maximal force is made up of both static (gravity times mass) and dynamic (mass times acceleration) forces. Any outside forces operating on the stage, such vibrations, must be considered dynamic forces. The maximum accelerating force that a stage can produce without going over its load capacity determines how much acceleration it can give a mass.Learn more about Rated load capacity refer :
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if an aircraft is loaded 90 pounds over maximum certificated gross weight and fuel (avgas) is drained to bring the aircraft weight within limits, how much fuel should be drained?
When an aircraft is loaded 90 pounds or more than the maximum certificated gross weight and fuel (avgas) is drained to bring the aircraft weight within limits, 15 gallons of fuel should be drained.
How is aircraft loaded moment calculated?Determine the empty weight of the aircraft and the weights of passengers, luggage, and fuel by consulting the pilot's operating manual. To determine the moment, multiply each weight by the arm, which is the separation from the reference datum. To determine the gross weight, add up all the weights. To find the total moment, add all the moments together.n= L/W Where L is the lift produced by the wing and W is the aircraft's gross weight. As lift and weight are different types of forces, units cancel out when calculating the load factor, leaving the load factor dimensionless. However, because load factor refers to a force, it is expressed in units of G's.To learn more about aircraft loaded moment refer to:
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What is the overall meaning of the “Engineering V?
Answer:
Engineer V provides expert consultation in one or more areas for the design, development and implementation of technical products and systems. Resolves highly complex technical issues and conducts advanced research. Being an Engineer V recommends alterations to development and design to improve quality of products and/or procedures.
Explanation:
One ounce is equal to 28.35 grams. Convert 16 ounces to grams. Round your answer to the nearest tenth.
O 1.8 grams
O 12.4 grams
O 44.4 grams
O 453.6 grams
Answer:
453.6 gm
Explanation:
28.35 g / oz * 16 oz = 453.6 gm
_____ can process many pieces of data at the same time and learn to recognize patterns.
Neural networks can process many pieces of data at the same time and learn to recognize patterns.
However, similar to the brain, such networks are capable of processing a variety of information concurrently, learning to spot patterns, and programming themselves to address similar issues on their own. Single instruction multiple data, or SIMD, is a type of parallel processing where a computer has two or more processors that all follow the same instruction set but handle distinct types of data. Large data sets that are based on the same predefined benchmarks are frequently analyzed using SIMD. Haptic interfaces, which are frequently used in gaming consoles, clothes, and sports training equipment, give tactile feedback by imparting vibrations or pressures to the user using actuators that are embedded in the device (for example, a cell phone).
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technician a says that proper starter operation depends on the battery being at a 95% charge and battery cables being of the correct size (gauge) and having no more than 0.8-volt drop. technician b says that voltage-drop testing includes cranking the engine, measuring the drop in voltage from the battery to the starter, and measuring the drop in voltage from the negative terminal of the battery to the engine block. who is right?
The right one is Technician b says that voltage-drop testing includes cranking the engine, measuring the drop in voltage from the battery to the starter, and measuring the drop in voltage from the negative terminal of the battery to the engine block .
What is a voltage drop test?To quickly identify high-resistance issues in a circuit, voltage drop testing is a straightforward but efficient diagnostic technique.You can measure the voltage drop across a load, device, or conductor using the DC voltage scale on your Digital Volt Ohm Meter (DVOM) or Digital Multi-meter.Utilizing a DMM to keep track of the voltage and amps being used by a specific circuit, group of circuits, component, or electrical system, voltage drop testing is carried out (windshield wipers, cruise control, charging system, etc.). The intended voltage or battery voltage is compared to the actual voltage next (if applicable).To learn more about voltage drop test refer to:
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technician a says that loose fan belts are usually destroyed more rapidly than belts that are adjusted too tight. technician b says that too tight adjustment on poly-v fan belts can destroy bearings. who is correct?
The bearings and shaft experience additional loads as a result of this increased tension. Bearings' lifespans might be shortened by excessive stress.
Explain about poly v belt?The inside of the Poly-V Belt, also known as the Ribbed Belt, is lined with longitudinal v-shaped ribs. These ribs give the pulley and the belt a bigger surface area to contact, which increases friction force. Compared to a flat belt or rubber v-belt of the same size, the belt can convey more power as a result.
The Poly-V Belt's design ensures superior protection for all reinforcing cords, resulting in a more even load distribution. The Poly-V Belt also serves as a guide for a belt tensioner or idler pulley. Less space is needed for Poly-V Belt drives, and the Belt can be stretched under higher tension.
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air flows at 1.2 m/s along a flat surface when it encounters a jet of air issuing from the horizontal wall at point a, as in fio p8.16. the jet volume flow is 0.4 m/s per unit depth into the paper. if the jet is approximated as an inviscid line source, (a) locate the stagnation point s on the wall. (b) how far vertically will the jet flow extend into the stream?
In the upper atmosphere, jet streams are relatively narrow bands of powerful wind. Jet streams carry the winds as they go from west to east
Explain about the jet flow?Jet streams can travel at speeds of more than 275 mph (239 kts / 442 km/h) and range in height from four to eight miles. Both the Northern and Southern Hemispheres have jet streams.
At altitudes of roughly 8 to 15 kilometres, jet streams move across the tropopause, the region between the troposphere and the stratosphere (5 to 9 miles). When cold air and hot air collide, strong air currents are created that, when viewed on a jet stream map, often resemble wavy, striated rivers.
The mid to upper troposphere, the part of the Earth's atmosphere where we live and breathe, is where jet streams are found, about five to nine miles above the planet's surface.
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a bushing is to be manufactured from coarse iron powders. it is desired that it have a final density 90% that of cast iron, and it is known that the shrinkage in sintering will be approximately 5%. the bushing is 50 mm in outer diameter and has a 20 mm inner diameter, what is the required press force? hint: percent shrinkage is along a single dimension
Surface is not a factor in the pressing force. Thus, regardless of the press's load, the same force is always applied.
Explain about the press force?A press is nothing more than a flat bed with a mechanically or hydraulically controlled pressing ram or rod. To produce a metal-pressed item, you must insert two halves of a metal press tool into the press. The tool is then bolted to the work surface at the bottom and to the ram or rod at the top
Presses are widely employed to bend or straighten materials as well as to press two items, such as bearings or other metal shaft-fitted components, together or away. Some smaller presses, like C-frame presses, can also be used to keep materials together during assembly or remove sections for maintenance.
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which of the following is true for the depletion region capacitance of a pn junction? select one: a. all of these b. the capacitance depends on the square root of the reverse bias for an abrupt step junction c. the capacitance depends on the cube root of the reverse bias for a linearly graded junction d. the capacitance decreases as the reverse bias increases e. the amount of charge stored increases as the reverse bias increases
All of these statements are true.
The depletion region functions as an insulating or dielectric substance. P-n junction diodes can therefore be compared to parallel plate capacitors.
What is PN junction?A P-N junction is the boundary or interface between the p-type and n-type semiconductor material types inside of a semiconductor.The process of doping produces the P-N junction in a semiconductor.In an electrical circuit, a diode (PN junction) makes it easier for current to flow in one way than the other.While reverse biasing is applying a voltage across a diode in the opposite direction, forward biasing refers to applying a voltage across a diode that facilitates easy current passage. High resistance is present in the p-n junction diode's depletion zone.As a result, the depletion region functions as an insulating or dielectric substance.P-n junction diodes can therefore be compared to parallel plate capacitors.Transition capacitance is the measurement of how much capacitance changes as voltage increases.
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