Mechanical Engineering Basic(Engineering > Mechanical Engineering ) Questions and Answers
Question 1. Kerosene is used as coolant, while machining
mild steel
cast iron
stainless steel
aluminium
Explanation:-
Answer: Option B. -> cast iron
cast iron
Question 2. In a pertrol engine the theoretical ratio of air to fuel is approximately
3:1
5:1
15:1
30:1
Explanation:-
Answer: Option B. -> 5:1
5:1
Question 3. Bore and stroke of a double acting steam engine cylinder are 30 cms and 50 cms respectively. If the IHP on crank end is 1% less than IHP on cover end, the diameter of piston rod is
1 cm
2 cm
3 cm
2.5 cm
Explanation:-
Answer: Option C. -> 3 cm
3 cm
Question 4. Chunk used on turret lathe is
Four jaw self centering chunk
Collect chunk
Three jaw independent chunk
Magnetic chunk
Explanation:-
Answer: Option C. -> Three jaw independent chunk
Three jaw independent chunk
Question 5. A perfect gas at 27 C is heated at constant pressure as to trible its volume the temperature of the gas will be
81 deg C
270 deg C
627 deg C
900 deg C
Explanation:-
Answer: Option A. -> 81 deg C
81 deg C
Question 6. The number of valves in a two stroke engine is
0
1
2
4
Explanation:-
Answer: Option A. -> 0
0
Question 7. The angular speed of watt governor, when its height is 98 mm is equal to
10 rad/s
9.8 rad/s
98 rad/s
5 rad/s
Explanation:-
Answer: Option A. -> 10 rad/s
10 rad/s
Question 8. First law of the thermodynamics deals with conversation of
mass
heat
momentum
energy
Explanation:-
Answer: Option D. -> energy
energy
Question 9. The area under pressure volume curve of any thermodynamic process represents
heat rejected only
heat absorbed only
heat absorbed and rejected
work done
Explanation:-
Answer: Option C. -> heat absorbed and rejected
heat absorbed and rejected
Question 10. For chain drives the small sprockets should have a minimum number of teeth of
