Turbo propeller has the following additional feature over the turbojet __________________?

Related Mcqs:

1. In turbo fan engine, the jet velocity as compared to turbo-jet engine is_________________?

   A. less
   B. more
   C. same
   D. may be less or more depening upon speed
   E. none of the above

2. The maximum propulsion efficiency of a turbojet is attained at around following speed __________________?

   A. 550 km/hr
   B. 1050km/hr
   C. 1700 km/hr
   D. 2400km /hr
   E. 4000 km/hr

3. Which of the following fuels can be used in turbojet engines _____________________?

   A. liquid hydrogne
   B. high speed diesel oil
   C. kerosene
   D. demethylated spirit
   E. methyl alcohol

4. The power available for take off and climb in case of turbojet engine as compared to reciprocating engine is ___________________?

   A. less
   B. more
   C. same
   D. may be less or more depending on ambient conditons
   E. unpredictable

5. Ram compression in turbojet involves____________________?

   A. reduction of speed of incoming air and conversion of part of it into pressure energy
   B. compression of inlet air
   C. increasing speed of incoming air
   D. lost work
   E. leakage losses

6. A simple turbo-jet engine is basically_________________?

   A. a propeller system
   B. gas-turbine engine equipped with a propulsive nozzle and diffuse*
   C. chemical rocket regine
   D. ram-jet enigne
   E. none of the above

7. Fighter bombers use following type of engine __________________?

   A. turbo-jet
   B. turbo-propeller
   C. rocket
   D. ram-jet ,
   E. pulsojet

8. Clearance volume in actual reciprocating compressors is essential __________________?

   A. to accommedate Valves in the cylinder head
   B. to provide cushioning effect
   C. to attain high volumetric efficiency
   D. to avoid mechanical bang of piston with cylinder head
   E. to provide cushioning effect and also to avoid mechanical bang of piston with cylinder head

9. Phenomenon of choking in compressor means __________________?

   A. no flow of air
   B. fixed mass flow rate regardless of pressure ratio
   C. reducing mass flow rate with increase in pressure ratio
   D. increased inclination of chord with air steam
   E. does not occur

10. In the aircraft propellers __________________?

    A. the propulsive matter is caused to flow around the propelled body
    B. propulsive matter is ejected from within the propelled body
    C. its functioning does not depend on presence of air
    D. all of the above
    E. none of the above