Class Test - Elements Of Mechanical Engineering (Meci 101)

20 Questions | By Shailendrakc.me. | Updated: Mar 21, 2022 | Attempts: 140

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Class Test - Elements Of Mechanical Engineering (Meci 101) - Quiz

1. All question carry equal marks 2. Don't waste time for single question.

Questions and Answers

1.

For a process from state 1 to state 2, heat transfer in a reversible process is given by
- A.
  
  Q for reversible=(To)*(S1-S2)
- B.
  
  Q for reversible=(To)*(S2-S1)
- C.
  
  Q for reversible=(To)/(S1-S2)
- D.
  
  Q for reversible=(To)/(S2-S1)
2.

Which of the following is true?
- A.
  
  Q for reversible > Q for irreversible and work for reversible < work for irreversible
- B.
  
  Q for reversible < Q for irreversible and work for reversible > work for irreversible
- C.
  
  Q for reversible < Q for irreversible and work for reversible < work for irreversible
- D.
  
  Q for reversible > Q for irreversible and work for reversible > work for irreversible
3.

Which of the following is true for a steady flow system?
- A.
  
  Mass entering = mass leaving
- B.
  
  Mass does not enter or leave the system
- C.
  
  Mass entering can be more or less than the mass leaving
- D.
  
  None of the mentioned
4.

The work done by a closed system in a reversible process is always ___ that done in an irreversible process.
- A.
  
  Less than or more than
- B.
  
  Equal to
- C.
  
  Less than
- D.
  
  More than
5.

A piston-cylinder contains air at 600 kPa, 290 K and a volume of 0.01m^3. A constant pressure process gives 54 kJ of work out. Find the final volume of the air.
- A.
  
  0.05 m^3
- B.
  
  0.01 m^3
- C.
  
  0.10 m^3
- D.
  
  0.15 m^3
6.

A piston-cylinder contains 0.5 kg of air at 500 kPa and 500 K. The air expands in a process so the pressure is linearly decreasing with volume to a final state of 100 kPa and 300 K. Find the work in the process.
- A.
  
  56.1 kJ
- B.
  
  66.1 kJ
- C.
  
  76.1 kJ
- D.
  
  86.1 kJ
7.

When a body A is in thermal equilibrium with a body B, and also separately with a body C, then B and C will be in thermal equilibrium with each other.
- A.
  
  True
- B.
  
  False
8.

What is the standard fixed point of thermometry?
- A.
  
  The ice point
- B.
  
  The steam point
- C.
  
  The triple point of water
- D.
  
  None of the mentioned
9.

Which of the following is chosen as the standard thermometric substance?
- A.
  
  Gas
- B.
  
  Liquid
- C.
  
  Solid
- D.
  
  All of the mentioned
10.

Work done by a system is taken to be
- A.
  
  Positive
- B.
  
  Negative
- C.
  
  Zero
- D.
  
  Varies according to situation
11.

Work is a
- A.
  
  Point function
- B.
  
  Path function
- C.
  
  Depends on the state
- D.
  
  None of the mentioned
12.

The differentials of point functions are
- A.
  
  Perfect differentials
- B.
  
  Exact differentials
- C.
  
  All of the mentioned
- D.
  
  none of the mentioned
13.

Constant pressure process is also known as
- A.
  
  Isopiestic process
- B.
  
  Isobaric process
- C.
  
  All of the mentioned
- D.
  
  None of the mentioned
14.

Work done in a quasi-static process
- A.
  
  Depends on the path followed
- B.
  
  Independent of the path followed
- C.
  
  Depends only on the initial and final states
- D.
  
  None of the mentioned
15.

Shaft uses which kind of motion to do work?
- A.
  
  Vertical motion
- B.
  
  Horizontal motion
- C.
  
  Rotational motion
- D.
  
  None of the mentioned
16.

Thermodynamic properties are
- A.
  
  Point function
- B.
  
  Path function
- C.
  
  Depends on the state
- D.
  
  None of the mentioned
17.

Cyclic integral of a property is always
- A.
  
  Zero
- B.
  
  One
- C.
  
  Infinite value
- D.
  
  None of the mentioned
18.

A real gas behaves as an ideal gas when?
- A.
  
  Temperature approaches zero
- B.
  
  Pressure approaches zero
- C.
  
  Both temperature and pressure approaches zero
- D.
  
  None of the mentioned
19.

Heat is a
- A.
  
  Point function
- B.
  
  Path function
- C.
  
  Depends on the state
- D.
  
  None of the mentioned
20.

Equation of continuity comes from
- A.
  
  Conservation of energy
- B.
  
  Conservation of mass
- C.
  
  Conservation of work
- D.
  
  Conservation of heat