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Test: Work & Heat Transfer - 1 - Mechanical Engineering MCQ


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10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering - Test: Work & Heat Transfer - 1

Test: Work & Heat Transfer - 1 for Mechanical Engineering 2024 is part of Topicwise Question Bank for Mechanical Engineering preparation. The Test: Work & Heat Transfer - 1 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Work & Heat Transfer - 1 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Work & Heat Transfer - 1 below.
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Test: Work & Heat Transfer - 1 - Question 1

A closed system receives 60 kJ heat but its internal energy decreases by 30 kJ, Then the work done by the system is

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Test: Work & Heat Transfer - 1 - Question 2

If the work done on a closed system is 20 kJ/kg, and 40 kJ/kg heat is rejected from the system, its internal energy decreases by

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As per first law of thermodynamics: 

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Test: Work & Heat Transfer - 1 - Question 3

 The integrating factor of quasi-static displacement work is

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Quasistatic work,

An inexact different dW when multiplied by an integrating factor 1/P becomes an exact differential dV.
(Point function) = (Integrating factor) x (Path function)

Test: Work & Heat Transfer - 1 - Question 4

 The integrating factor of reversible heat transfer is

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Test: Work & Heat Transfer - 1 - Question 5

Heat transferred to a closed stationary system at constant volume is equal to

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Test: Work & Heat Transfer - 1 - Question 6

Which among the following is not a boundary phenomenon?

Test: Work & Heat Transfer - 1 - Question 7

In a general compression process, 2 kJ of mechanical work is supplied to 4 kg of fluid and 800 J of heat is rejected to the cooling jacket. The change in specific internal energy would be

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Test: Work & Heat Transfer - 1 - Question 8

Which among the following is not true?

Test: Work & Heat Transfer - 1 - Question 9

The following data refer to a 6-cylinder, single- acting, two-stroke diesel engine:
Speed-250 rpm
Cylinder diameter - 0.7 m
Stroke of a piston - 1.2 m
Area of indicator diagram - 5.5 x 10-4 m2
Length of diagram - 0.06 m
Spring value -144 MPa per m

What is the net rate of work transfer from the gas to the pistons in kW?

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Net work transfer,

Test: Work & Heat Transfer - 1 - Question 10

A piston-cylinder device with air at an initial temperature of 289C undergoes an expansion process for which pressure and volume are related as given below:

What is the work done by the system?

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