A. One air stream

B. Two or more air streams

C. No air stream

D. Solid fuel firing

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

A. N.T.P. conditions

B. Intake temperature and pressure conditions

C. 0°C and 1 kg/cm²

D. 20°C and 1 kg/cm²

A. The combustion chamber in a rocket engine is directly analogous to the reservoir of a supersonic wind tunnel

B. The stagnation conditions exist at the combustion chamber

C. The exit velocities of exhaust gases are much higher than those in jet engine

D. All of the above

A. Increases power output

B. Improves thermal efficiency

C. Reduces exhaust temperature

D. Do not damage turbine blades

A. Gas turbine plant

B. Petrol engine

C. Diesel engine

D. Solar plant

A. 1 - k + k (p₁/p₂)^1/n

B. 1 + k - k (p₂/p₁)^1/n

C. 1 - k + k (p₁/p₂) ^{n- 1/n}

D. 1 + k - k (p₂/p₁) ^n-1/n

A. Turbojet

B. Turbo-propeller

C. Rocket

D. Ramjet

A. Mechanical efficiency

B. Volumetric efficiency

C. Isothermal efficiency

D. Adiabatic efficiency

A. Larger air handling ability per unit frontal area

B. Higher pressure ratio per stage

C. Aerofoil blades are used

D. Higher average velocities

A. 1.03 kg/cm²

B. 1.06 kg/cm²

C. 1.00 kg/cm²

D. 0.53 kg/cm²

A. Electric motor

B. Engine

C. Either (A) or (B)

D. None of these

A. The compression ratio in each stage should be same

B. The intercooling should be perfect

C. The workdone in each stage should be same

D. All of the above

A. Compressor

B. Heating chamber

C. Cooling chamber

D. All of these

A. 1

B. 1.2

C. 1.3

D. 1.4

A. 3.5 : 1

B. 5 : 1

C. 8 : 1

D. 12 : 1

A. Increase of work ratio

B. Decrease of thermal efficiency

C. Decrease of work ratio

D. Both (A) and (B) above

A. p₂/p₁ = p₃/p₂

B. p₁/p₃ = p₂/p₁

C. p₁ = p₃

D. p₁ = p₂ p₃

A. Work done in first stage should be more

B. Work done in subsequent stages should increase

C. Work done in subsequent stages should decrease

D. Work done in all stages should be equal

A. Increases with increase in compression ratio

B. Decreases with increase in compression ratio

C. Is not dependent upon compression ratio

D. May increase/decrease depending on compressor capacity

A. Carbonisation of coal

B. Passing steam over incandescent coke

C. Passing air and a large amount of steam over waste coal at about 65°C

D. Partial combustion of coal, eke, anthracite coal or charcoal in a mixed air steam blast

A. Injecting water into the compressor

B. Burning fuel after gas turbine

C. Injecting ammonia into the combustion chamber

D. All of the above

A. Increase velocity

B. Make the flow streamline

C. Convert pressure energy into kinetic energy

D. Convert kinetic energy into pressure energy

A. p₂/p₁ = p₃/p₂ = p₄/p₃

B. p₃/p₁ = p₄/p₂

C. p₁ p₂ = p₃ p₄

D. p₁ p₃ = p₂ p₄

A. Centrifugal compressor

B. Axial compressor

C. Pumps

D. All of the above

A. Actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions

B. Volume of air delivered by the compressor

C. Volume of air sucked by the compressor during its suction stroke

D. None of the above

A. Less

B. More

C. Same

D. More/less depending on compressor capacity

A. Before the intercooler

B. After the intercooler

C. Between the aftercooler and receiver

D. Before first stage suction

A. Low speeds

B. High speeds

C. Low altitudes

D. High altitudes

A. 200°C

B. 500°C

C. 700°C

D. 1000°C

A. Compressor efficiency

B. Isentropic efficiency

C. Euler's efficiency

D. Pressure coefficient