mr2/3
2mr2/3
2mr2/5
3mr2/5
✅ The correct answer is option B.
Mechanical Engineering MCQs
A closed system is one in which heat and work crosses the boundary of the system but the mass of the working substance does not crosses the boundary of the system.
Yes
No
✅ The correct answer is option A.
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as
compression ratio
work ratio
pressure ratio
none of these
✅ The correct answer is option B.
When a body is subjected to transverse vibrations, the stress induced in a body will be
shear stress
bending stress
tensile stress
compressive, stress
✅ The correct answer is option B.
At the break even point,
total cost is more than the sales revenue
total cost is less than the sales revenue
total cost is equal to sales revenue
fixed cost is equal to
✅ The correct answer is option C.
Rateau turbine is
simple reaction turbine
velocity compounded turbine
pressure compounded turbine
pressure-velocity comp
✅ The correct answer is option C.
How many cells are used in a 12 volt car battery ?
2
4
6
8
✅ The correct answer is option C.
The knocking in spark ignition engines can be reduced by
retarding the spark
increasing the engine speed
both (a) and (b)
none of these
✅ The correct answer is option C.
A locking device extensively used in marine type connecting rod ends is a
jam nut
castle nut
sawn nut
ring nut
✅ The correct answer is option D.
The compression ratio in Diesel engines is less than the petrol engine.
Agree
Disagree
✅ The correct answer is option B.