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

A. it is never done

B. control fire hazards

C. control temperature

D. increase efficiency

A. 0.5 kg/cm2

B. 1.06 kg/cm2

C. 1.03 kg/cm2

D. 0.53 kg/cm2

A. depends on on odier considerations

B. same

D. lower

E. unpredictable

A. enables compression in two stages

B. prevents compressor jacket running very hot

D. cools the delivered air

E. is the standard practice for big compressors

B. 72%

C. 85%.

D. 34%

E. 50%

A. 75%

C. 85%

D. 50%

E. 90%

A. reheating

B. all of the above

C. inter cooling

D. none of the above

A. maximum cycle temperature

B. minimum cycle temperature

C. pressure ratio

E. none of die above

A. k up wrong statement ?

C. pressure ratio

D. change in load

E. all of the above

F. mass flow rate

B. ankine cycle

C. Carnot cycle

D. Joule cycle

E. Erricsson cycle

A. two adiabatic, one isobaric and one constant volume,

C. two isobaric, two adiabatic and one constant volume

D. one adiabatic, one isobaric and two constant volume

E. one adiabatic, two isobaric, and one constant volume

A. none of the above

B. polytropic compression

C. isentropic compression

E. isothermal compression

A. 1500C

C. 2000C

D. 1000C

E. 2500C

A. adiabatic efficiency

C. volumetric efficiency

D. compressor efficiency

E. isothermal efficiency

A. no flow of air

B. does not occur

C. reducing mass flow rate with increase in pressure ratio

E. increased inclination of chord with air steam

A. thermal compression efficiency, even when running at high speed, can be approached by using

B. multi-stage compression

C. cold water spray

E. fully insulating the cylinder

F. high stroke

A. axial flow compressors apt to be longer as compared to centrifugal type

B. Axial flow compressors have a sub-stantially constant delivery at variable pressures

C. centrifugal compressors have a wider stable operating range than axial flow compressors

D. centrifugal compressors deliver prac-tically constant pressure over a considerable range of capacities

B. low freezing point

C. ease of atomisation

D. high calorific value

E. none of the above

A. pressure ratio

B. Eulers efficiency

C. isentropic efficiency

D. compressor efficiency

A. 4000 km/hr

B. 1050km/hr

C. 550 km/hr

D. 1700 km/hr