M C Q s D r i v e
03079682698
mcqsdrive@gmail.com
About
Contact

Contact Info

03079682698

mcqsdrive@gmail.com

Ad Banner

Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

thumb

Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

All Topics  1919

The material commonly used for air craft gas turbine is__________________?
A stainless steel
B high alloy’ steel
C duralumin
D Timken, Haste and Inconel allpys
Correct Answer: Timken, Haste and Inconel allpys
The ideal efficiency of simple gas turbine cycle depends on________________?
A pressure ratio
B maximum cycle temperature
C minimum cycle temperature
D all of the above
Correct Answer: pressure ratio
There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would__________________?
A remain same
B decrease
C increase
D unpredictable
Correct Answer: increase
Water gas is produced by ___________________ ?
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 caol, eke, anthractie coal or charcoal in a mixed air steam blast
Correct Answer: passing steam over incandescent coke
The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio_____________________?
A increases
B decreases
C first increases and then decreases
D first decreases and then increases
Correct Answer: increases
The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is____________________?
A heated
B compressed air before entering the combustion chamber is heated
C bled gas from turbine is heated and readmitted for complete expansion
D exhaust gases drive the compressor
Correct Answer: heated
Efficiency of gas turbine is increased by________________ ?
A reheating
B inter cooling
C adding a regenerator
D all of the above
Correct Answer: adding a regenerator
The hottest point in a gas turbine is______________________?
A at the base
B at the tip
C in the center
D between ~ to i of the blade height
Correct Answer: between ~ to i of the blade height
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is_________________?
A higher
B lower
C equal
D can’t be compared
Correct Answer: lower
The pressure ratio in gas turbines is of the order of__________________?
A 2:l
B
C 61: 1
D 9 : 1
Correct Answer: 61: 1
03079682698
mcqsdrive@gmail.com

Copyright @ 2026 MCQsDrive . All Rights Reserved.