ELEMENTS OF REMOTE SENSING QUIZ

The volume of air delivered by the compressor is called

Free air delivery

None of the listed here

Swept volume

Compressor capacity

TRUE ANSWER : ?
YOUR ANSWER : ?

More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than

6 kg/cm²

10 kg/cm²

14.7 kg/cm²

2 kg/cm²

TRUE ANSWER : ?
YOUR ANSWER : ?

For perfect intercooling in a two stage compressor

p₂/p₁ = p₃/p₂

p₁/p₃ = p₂/p₁

p₁ = p3

p₁ = p₂ p3

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of work done per cycle to the swept volume in case of compressor is called

Compression index

Compression ratio

Compressor efficiency

Mean effective pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

The volumetric efficiency for reciprocating air compressors is about

70 to 90%

40 to 60%

10 to 40%

60 to 70%

TRUE ANSWER : ?
YOUR ANSWER : ?

For minimum work in multistage compression, assuming same index of compression in all stages

Work done in all stages should be equal

Work done in first stage should be more

Work done in subsequent stages should increase

Work done in subsequent stages should decrease

TRUE ANSWER : ?
YOUR ANSWER : ?

The inlet pressure is always ___ the discharge pressure.

Equal to

None of the listed here

Less than

More than

TRUE ANSWER : ?
YOUR ANSWER : ?

The closed cycle in gas turbines

Is used when gas is to be burnt

Provides greater flexibility

In never used

Provides lesser flexibility

TRUE ANSWER : ?
YOUR ANSWER : ?

The type of rotary compressor used in aeroplanes, is of

Centrifugal type

None of these

Radial flow type

Axial flow type

TRUE ANSWER : ?
YOUR ANSWER : ?

When the temperature of air leaving the inter-cooler, in a two stage compression with inter-cooler, is ________ the original atmospheric air temperature, then the intercooling is known as perfect or complete intercooling.

Less than

None of these

Equal to

More than

TRUE ANSWER : ?
YOUR ANSWER : ?

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