| Book Name: | COMPRESSORS, GAS TURBINES and JET ENGINES – Mechanical Engineering Multiple choice Questions Answers |
| Category: | Mechanical MCQs |
| Free Download: | Available |
COMPRESSORS, GAS TURBINES and JET ENGINES – Mechanical Engineering Multiple choice Questions Answers
“COMPRESSORS, GAS TURBINES and JET ENGINES”
Mechanical Engineering Multiple choice Questions Answers
from FreePDfbook.com
COMPRESSORS GAS TURBINES and JET ENGINES Questions Answers
- Free air is the air at
(a) atmospheric conditions at any specific location
(b) 20°C and 1 kg/cm2 and relative humidity of 36%
(c) 0°C and standard atmospheric conditions
(d) 15°C and 1 kg/cm2
(e) 25°C, 1 kg/cm2 and relative humidity of 50%.
Ans: a
- Standard air is the air at
(a) atmospheric conditions at any specific location
(b) 20°C and 1 kg/cm2 and relative humidity 36%
(c) 0°C and standard atmospheric conditions
(d) 15°C and 1 kg/cm2
(e) 25°C, 1 kg/cm2 and RH of 60%.
Ans: b
- 1 m of air at atmospheric condition weighs approximately
(a) 0.5 kg
(b) 1.0 kg
(c) 1.3 kg
(d) 2.2 kg
(e) 3.2 kg.
Ans: c
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- The compression ratio in a jet engine varies proportional to
(a) speed
(b) speed
(c) altitude
(d) Vspeed
(e) does not Vary.
Ans: b
- The efficiency of jet engine is
(a) higher at ground
(b) higher at high altitudes
(c) same at all altitudes
(d) higher at high speed
(e) lower at low speed.
Ans: b
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