A rocket works with maximum overall efficiency when air-craft velocity is __________ the jet velocity.
Answer
Correct Answer:
One-half
Note: This Question is unanswered, help us to find answer for this one
Intercooling in gas turbines
Answer
Correct Answer:
Increases net output and thermal efficiency both
Note: This Question is unanswered, help us to find answer for this one
The maximum temperature in a gas turbine is
Answer
Correct Answer:
700°C
Note: This Question is unanswered, help us to find answer for this one
Which of the following statement is correct?
Answer
Correct Answer:
The compression ratio for the compressor is always greater than unity.
Note: This Question is unanswered, help us to find answer for this one
Rotary compressors are used for delivering
Answer
Correct Answer:
Large quantities of air at low pressures
Note: This Question is unanswered, help us to find answer for this one
An open cycle gas turbine works on the same cycle as that of a closed cycle gas turbine.
Answer
Correct Answer:
Yes
Note: This Question is unanswered, help us to find answer for this one
In a reciprocating air compressor, the compression work per kg of air
Answer
Correct Answer:
Is independent of clearance volume
Note: This Question is unanswered, help us to find answer for this one
Gas turbine as compared to steam turbine
Answer
Correct Answer:
All of these
Note: This Question is unanswered, help us to find answer for this one
When the temperature of air leaving the intercooler, in a two stage compression with intercooler, is __________ the original atmospheric air temperature, then the intercooling is known as perfect or complete intercooling.
Answer
Correct Answer:
Equal to
Note: This Question is unanswered, help us to find answer for this one
The rotary compressors are suitable for large discharge of air at low pressure.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
Which of the following statement is wrong?
Answer
Correct Answer:
None of these
Note: This Question is unanswered, help us to find answer for this one
The type of rotary compressor used in gas turbines, is of
Answer
Correct Answer:
Axial flow type
Note: This Question is unanswered, help us to find answer for this one
The total heat rejected in a reciprocating air compressor is equal to the sum of the heat rejected during polytropic compression per kg of air and heat rejected in the intercooler per kg of air.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
The compression ratio in a gas turbine is
Answer
Correct Answer:
1
Note: This Question is unanswered, help us to find answer for this one
The stagnation pressure rise in a centrifugal compressor takes place
Answer
Correct Answer:
In the diffuser and impeller
Note: This Question is unanswered, help us to find answer for this one
The capacity of a compressor is expressed in
Answer
Correct Answer:
M3/min
Note: This Question is unanswered, help us to find answer for this one
The actual volume of air delivered by a compressor, When reduced to the normal temperature and pressure conditions is called compressor capacity.
Answer
Correct Answer:
No
Note: This Question is unanswered, help us to find answer for this one
A large clearance Volume in a reciprocating compressor results in
Answer
Correct Answer:
Reduced volume flow rate
Note: This Question is unanswered, help us to find answer for this one
The increase in pressure in a roots blower is entirely due to back flow of air.
Answer
Correct Answer:
Agree
Note: This Question is unanswered, help us to find answer for this one
In axial flow compressor, exit flow angle deviation from the blade angle is a function of
Answer
Correct Answer:
Blade camber and incidence angle
Note: This Question is unanswered, help us to find answer for this one
