A. may increase/decrease depending on compressor capacity

C. unpredictable

D. decreases with increase in compression ratio

E. increases with increase in compression ratio

B. unpredictable

C. more

D. same

E. depends on other factors

A. 2-stroke engine

C. 4-stroke diesef engine

D. multi-cylinder engine

E. 4-stroke petrol engine

A. none of the above

B. aerofoil blades are used

C. higher average velocities

E. higher pressure ratio per stage

A. provide robust structure

B. collect more air

C. beautify the shape

E. none of the above

A. when other sources of power fail

B. in emergency

C. to enable start thermal power plant

E. to supply base load requirements

A. gas turbine uses low air-fuel ratio to develop the high thrust required

C. gas turbine uses low air-fuel ratio to economise on fuel

D. none of the above

E. all of the above

A. at very high speed

B. at zero speed

C. at average speed

D. isothermally

A. pressures at discharge and suction cor-responding to same temperature

B. none of the above

D. gauge discharge pressure to the gauge intake pressure

E. stroke volume and clearance volume

B. total output/air input

C. none Of the above

D. compression work/motor input

E. isothermal H.P./shaft H.R

B. altitude

C. speed

D. Vspeed

E. does not Vary

A. h.p. compressor L connected to h.p. turbine and l.p. compressor ot l.p. tur-bine

C. both the arrangements can be employed

D. all are connected in series

E. none of the above

B. as large as possible

C. about 100% of swept volume

D. about 50% of swept volume

E. none of the above

A. isobaric

B. adiabatic

D. isentropic

E. isochoric

A. mass

B. energy

C. angular momentum

E. flow

A. none of the above

B. be laid vertically

D. rise gradually towards the point of use

E. be laid exactly horizontally

A. lower at low speed

B. higher at high speed

C. higher at ground

E. same at all altitudes

A. none of the above

C. blow-off control

D. throttle control B. clearance control

A. centrifugal

B. radial flow

C. none of the above

E. combination of above

A. none of the above

B. atmosphere

C. vacuum

D. back to the compressor

A. velocity coefficient

C. velocity factor

D. blade effectiveness

A. pressure ratio alone

B. maximum cycle temperature alone

C. minimum cycle temperature alone

E. none of the above

A. low discharge at low pressure

C. large discharge at high pressure

D. low discharge at high pressure

E. there is no such limitation

A. ram-jet enigne

B. a propeller system

C. chemical rocket regine

E. none of the above

A. These are used to dampen pulsations ,

C. These knock out some oil and moisture

D. These act as reservoir to- take care of sudden demands

E. These reduce frequent on/off operation of compressors

A. decreasing the compression work

B. decreasing the turbine work

C. increasing the turbine work

E. increasing the compression work

A. none of the above

B. pumps

D. centrifugal compressor

E. axial compressor

B. solids

C. plasma

D. liquid

E. gases

B. higher

C. same

D. uncomparable

E. unpredictable

A. in three phases

C. in the form of air and water mixture

D. in two phases

E. gas and no air

B. net work output and heat supplied (6) net work output and work done by turbine

C. isentropic increase/drop in temperature and actual increase/ drop in temperature

D. actual heat drop and isentropic heat drop

B. 0.50%

C. 0.10%

D. 10%.

E. 5%

A. two isobaric, two adiabatic and one constant volume

C. two adiabatic, one isobaric and one constant volume

D. two adiabatic and two isobaric

E. one adiabatic, one isobaric and two constant volume

A. 12:01

B. 2:l

C. 9:01

D. 4:01

A. combination of A. and D.

B. generating pressure directly

C. conversion of pressure energy into kinetic energy

E. centripetal action

A. 1.3

C. 1.5

D. 1.4

E. 1.2 ,

A. none of the above

C. 6 kg/cm2

D. 14.7 kg/cm2

E. 10 kg/cm2

A. liquid hydrogen

B. vacuum

D. oxygen alone

E. atmospheric air

A. remains unaffected

C. increases upto certain limit and then decreases

D. decreases

E. may increase or decrease depending on compressor capacity

B. axial

C. screw

D. centrifugal

E. turbo jet

B. volume of air inhaled at working conditions

C. none of the above

D. volume at 0C and 1 kg/cm2

E. volume at 20C and 1 kg/cm2

A. 5:01

B. 3.5 : 1

C. 12:01

E. 20:01

B. its functioning does not depend on presence of air

C. none of the above

D. propulsive matter is ejected from within the propelled body

E. the propulsive matter is caused to flow around the propelled body

A. none of the above

B. somewhere in between isentropic and isothermal

C. isentropic

D. polytropic

A. ram-jet ,

B. turbo-propeller

C. pulsojet

E. rocket

B. moisture free air

C. lower power consumption per unit of air delivered

D. decreased discharge temperature

E. higher volumetric efficiency

A. 20-30%

C. 40-50%

D. 90-100%

E. 60-70%

A. variable speed

B. relief valve

C. none of the above

E. constant speed unloader

A. non of theses

B. it is inefficient

C. it is bulky

A. more

C. same

D. dependent on power and speed

E. less