GTU Engineering 1st Year MCQ | Elements of Mechanical Engineering-2110006 Summer 2017 Sem-2

Elements of Mechanical Engineering (2110006)
Summer 2017 Sem-2

MCQ(s) of Elements of Mechanical Engineering (2110006) - Summer 2017 Sem-2

- Q. 1 In an isolated system, what transfer?
- (A) mass
  
  (B) energy
- (C) both mass and energy
  
  (D) neither mass nor energy
- Answer
  
  (D) neither mass nor energy
- Q. 2 Which of the following is a path function?
- (A) heat
  
  (B) temperature
- (C) pressure
  
  (D) volume
- Answer
  
  (A) heat
- Q. 3 Which has the highest calorific value?
- (A) Petrol
  
  (B) Diesel oil
- (C) Alcohol
  
  (D) Benzene
- Answer
  
  (A) Petrol
- Q. 4 Choose the incorrect relationship.
- (A) C_P + C_V = R
  
  (B) C_P - C_V = R
- (C) $γ = C_{P} / C_{V}$
  
  (D) $C_{V} = R / (γ - 1)$
- Answer
  
  (A) C_P + C_V = R
- Q. 5 Steam coming out of the whistle of pressure cooker is
- (A) Dry and saturated vapour
  
  (B) Wet vapour
- (C) Superheated vapour
  
  (D) Ideal gas
- Answer
  
  (C) Superheated vapour
- Q. 6 Superheating of steam is done at constant
- (A) pressure
  
  (B) volume
- (C) temperature
  
  (D) enthalpy
- Answer
  
  (A) pressure
- Q. 7 The Otto cycle is also known as
- (A) constant pressure cycle
  
  (B) constant volume cycle
- (C) constant temperature cycle
  
  (D) constant enthalpy cycle
- Answer
  
  (B) constant volume cycle
- Q. 8 When heat is added to the water and if its temperature does not change, the heat added is called
- (A) latent heat
  
  (B) isothermal heat
- (C) sensible heat
  
  (D) constant pressure heat
- Answer
  
  (A) latent heat
- Q. 9 Which one of the following is vertical boiler?
- (A) Lancashire
  
  (B) Cochran
- (C) Cornish
  
  (D) Locomotive
- Answer
  
  (B) Cochran
- Q. 10 Petrol engine work on ________system.
- (A) either spark or compression ignition
  
  (B) spark ignition
- (C) compression ignition
  
  (D) all of the above
- Answer
  
  (B) spark ignition
- Q. 11 Scroll compressor is a ______________compressor.
- (A) reciprocating
  
  (B) rotary
- (C) dynamic
  
  (D) radial
- Answer
  
  (B) rotary
- Q. 12 Pump cannot be driven by
- (A) electric motor
  
  (B) I.C. Engine
- (C) steam turbine
  
  (D) compressor
- Answer
  
  (D) compressor
- Q. 13 Performance parameter for refrigeration system is known as
- (A) efficiency
  
  (B) COP
- (C) effectiveness
  
  (D) energy ratio
- Answer
  
  (B) COP
- Q. 14 In VCR cycle, refrigeration effect is produced by
- (A) compressor
  
  (B) condenser
- (C) expander
  
  (D) evaporator
- Answer
  
  (D) evaporator