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
Related Mcqs:
- The air entry velocity m a rocket as compared to aircraft is_________________?
A. same
B. more
C. less
D. zero
E. dependent on power and speed - 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 - To aviod moisture troubles, the compressed air main line should __________________?
A. rise gradually towards the point of use
B. drop gradually towards the point of use
C. be laid vertically
D. be laid exactly horizontally
E. none of the above - The volumetirc efficiency of a compressor is calculated on the basis of __________________?
A. volume of air inhaled at working conditions
B. volume of air inhaled at N.T.P. conditions
C. volume at 0°C and 1 kg/cm2
D. volume at 20°C and 1 kg/cm2
E. none of the above - 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 - Turbo propeller has the following additional feature over the turbojet __________________?
A. peopeller
B. diffuser
C. intercooler
D. turbine and combustion chamber
E. starting engine - 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 - Fighter bombers use following type of engine __________________?
A. turbo-jet
B. turbo-propeller
C. rocket
D. ram-jet ,
E. pulsojet - Gas turbine cycle with Regenerator __________________?
A. increases thermal efficiency
B. allows high compression ratio
C. decreases heat loss is exhaust
D. allows operation at very high altitudes
E. permits high moisture content fuel to be used - Isothermal compression effeicency can be attained by running the compressor__________________?
A. at very high speed
B. at very slow speed
C. at average speed
D. at zero speed
E. isothermally
