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MCQs

Total Questions : 765 | Page 71 of 77 pages
Question 701. Which of the following plants is smallest and lightest for generating a given amount of power?
  1.    Solar plant
  2.    Gas turbine plant
  3.    Petrol engine
  4.    Diesel engine
 Discuss Question
Answer: Option B. -> Gas turbine plant
Question 702. In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of
  1.    Compressed air
  2.    Vacuum
  3.    Atmospheric air
  4.    Oxygen alone
 Discuss Question
Answer: Option A. -> Compressed air
Question 703. Gas turbine blades are given a rake
  1.    In the direction of motion of blades
  2.    Equal to zero
  3.    Opposite to the direction of motion of blades
  4.    Depending on the velocity
 Discuss Question
Answer: Option A. -> In the direction of motion of blades
Question 704. An air compressor may be controlled by
  1.    Any one of the above
  2.    Throttle control
  3.    Clearance control
  4.    Blow off control
 Discuss Question
Answer: Option A. -> Any one of the above
Question 705. Rotary compressors are suitable for
  1.    Large discharge at low pressure
  2.    Large discharge at high pressure
  3.    Low discharge at low pressure
  4.    Low discharge at high pressure
 Discuss Question
Answer: Option A. -> Large discharge at low pressure
Question 706. The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the
  1.    Total adiabatic temperature drop
  2.    Total temperature drop in the stage
  3.    Adiabatic temperature drop in the stage
  4.    Total temperature drop
 Discuss Question
Answer: Option B. -> Total temperature drop in the stage
Question 707. Volumetric efficiency of a compressor with clearance volume
  1.    Decreases with increase in compression ratio
  2.    In not dependent upon compression ratio
  3.    May increase/decrease depending on compressor capacity
  4.    Increases with increase in compression ratio
 Discuss Question
Answer: Option A. -> Decreases with increase in compression ratio
Question 708. Volumetric efficiency of a compressor without clearance volume
  1.    Increases with increase in compression ratio
  2.    Decreases with increase in compression ratio
  3.    May increase/decrease depending on compressor capacity
  4.    Is not dependent upon compression ratio
 Discuss Question
Answer: Option D. -> Is not dependent upon compression ratio
Question 709. Compression efficiency is compared against
  1.    Adiabatic compression
  2.    Ideal compression
  3.    Isentropic compression
  4.    Isothermal compression
 Discuss Question
Answer: Option D. -> Isothermal compression
Question 710. The net work input required for compressor with increase in clearance volume
  1.    Increases/decreases depending on compressor capacity
  2.    Decreases
  3.    Increases
  4.    Remains same
 Discuss Question
Answer: Option D. -> Remains same

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