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MCQs

Total Questions : 765 | Page 74 of 77 pages
Question 731. Gas turbine as compared to steam turbine
  1.    Has less efficiency
  2.    All of these
  3.    Has compressor and combustion chamber
  4.    Requires less space for installation
 Discuss Question
Answer: Option B. -> All of these
Question 732. The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is
  1.    Higher
  2.    None of these
  3.    Lower
  4.    Same
 Discuss Question
Answer: Option C. -> Lower
Question 733. A centrifugal compressor works on the principle of
  1.    Centripetal action
  2.    Generating pressure directly
  3.    Conversion of kinetic energy into pressure energy
  4.    Conversion of pressure energy into kinetic energy
 Discuss Question
Answer: Option C. -> Conversion of kinetic energy into pressure energy
Question 734. Only rocket engines can be propelled to space because
  1.    They can generate very high thrust
  2.    They have high propulsion efficiency
  3.    They are not air breathing engines
  4.    These engines can work on several fuels
 Discuss Question
Answer: Option C. -> They are not air breathing engines
Question 735. The volume of air sucked by the compressor during its suction stroke is called
  1.    Compressor capacity
  2.    Swept volume
  3.    None of these
  4.    Free air delivery
 Discuss Question
Answer: Option B. -> Swept volume
Question 736. Gas turbine works on
  1.    Brayton or Atkinson cycle
  2.    Ericsson cycle
  3.    Rankine cycle
  4.    Carnot cycle
 Discuss Question
Answer: Option A. -> Brayton or Atkinson cycle
Question 737. Open cycle gas turbine works on
  1.    Carnot cycle
  2.    Brayton or Atkinson cycle
  3.    Ericsson cycle
  4.    Rankine cycle
 Discuss Question
Answer: Option B. -> Brayton or Atkinson cycle
Question 738. Water is injected in gas turbine cycle to
  1.    Increase efficiency
  2.    Control fire hazards
  3.    Control output of turbine
  4.    Control temperature
 Discuss Question
Answer: Option C. -> Control output of turbine
Question 739. A turboprop is preferred to turbojet because
  1.    It can fly at supersonic speeds
  2.    It has high power for take off
  3.    It can fly at high elevations
  4.    It has high propulsive efficiency at high speeds
 Discuss Question
Answer: Option B. -> It has high power for take off
Question 740. A closed cycle gas turbine works on
  1.    Joule cycle
  2.    Rankine cycle
  3.    Ericsson cycle
  4.    Carnot cycle
 Discuss Question
Answer: Option A. -> Joule cycle

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