ExamVeda
Login
Home

Compressors, Gas Turbines And Jet Engines MCQ Questions & Answers | Mechanical Engineering

Learn Compressors, Gas Turbines And Jet Engines MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Compressors, Gas Turbines And Jet Engines MCQ question is the important chapter for a Mechanical Engineering and GATE students. Page-3 section-2

Each section contains 100 MCQs on Compressors, Gas Turbines and Jet Engines .
21
Which of the following statement is correct?
Discuss
Answer & Solution
Answer: Option B
Solution:
The compression ratio for the compressor is always greater than unity
22
Which of the following statement is correct?
Discuss
Answer & Solution
Answer: Option C
Solution:
- The reciprocating compressors are best suited for high pressure and low volume capacity - The effect of clearance volume on power consumption is negligible for the same volume of discharge
23
The assumption made in two stage compression with inter-cooler is that
Discuss
Answer & Solution
Answer: Option D
Solution:
The assumption made in two stage compression with inter-cooler is that -There is no pressure drop in the inter-cooler - The compression in both the cylinders is polytropic -The suction and delivery of air takes place at constant pressure
24
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.
Discuss
Answer & Solution
Answer: Option C
Solution:
The temperature of air at the beginning of the compression stroke is more than the atmospheric temperature.
25
When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be
Discuss
Answer & Solution
Answer: Option A
Solution:
When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be Forward curved
26
The volumetric efficiency of compressor with increase in compression ratio will
Discuss
Answer & Solution
Answer: Option B
Solution:
The volumetric efficiency of compressor with increase in compression ratio will decrease
27
The thermodynamic efficiency of rotary compressor is based on
Discuss
Answer & Solution
Answer: Option B
Solution:
The thermodynamic efficiency of rotary compressor is based on Adiabatic compression
28
The ratio of work-done per cycle to the stroke volume of the compressor is known as
Discuss
Answer & Solution
Answer: Option D
Solution:
The ratio of work-done per cycle to the stroke volume of the compressor is known as Mean effective pressure
29
The stagnation pressure rise in a centrifugal compressor takes place
Discuss
Answer & Solution
Answer: Option C
Solution:
The stagnation pressure rise in a centrifugal compressor takes place In the diffuser and impeller
30
The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turbine and fixed higher and lower temperature) with increase in pressure ratio will
Discuss
Answer & Solution
Answer: Option D
Solution:
The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turbine and fixed higher and lower temperature) with increase in pressure ratio will First increase, reach maximum and then decrease