Correct
Incorrect
✅ The correct answer is option A.
Mechanical Engineering MCQs
The formation of frost on cooling coils in a refrigerator
increases heat transfer
improves C.O.P. of the system
increases power consumption
reduces power consumption
✅ The correct answer is option C.
Production cost refers to prime cost plus
factory overheads
factory and administration overheads
factory, administration and sales overheads
factory, administration, sales overheads and profit
✅ The correct answer is option A.
Which of the following has a fine gold colour and is used for imitation jewellery?
Silicon bronze
Aluminium bronze
Gun metal
Babbit metal
✅ The correct answer is option B.
When slack of an activity is negative
it represents a situation where extra resources are available and the completion of project is not delayed
it represents that a programme falls behind schedule and additional resources are required to complete the project in time
the activity is critical and any delay in its performance will delay the completion of whole project
all of the above
✅ The correct answer is option B.
The function of a crosshead is to guide motion of the __________ and to prevent it from bending.
piston rod
connecting rod
eccentric rod
valve rod
✅ The correct answer is option A.
Discharge of a centrifugal pump is (where N = Speed of the pump impeller)
directly proportional to N
inversely proportional to N
directly proportional to N2
inversely proportional to N2
✅ The correct answer is option A.
The purpose of testing an internal combustion engine is
to determine the information, which can not be obtained by calculations
to conform the data used in design, the validity of which may be doubtful
to satisfy the customer regarding the performance of the engine
all of the above
✅ The correct answer is option D.
The bending moment at a point on a beam is the algebraic __________ of all the moments on either side of the point.
sum
difference
✅ The correct answer is option A.
Intercooling in gas turbines
decreases net output but increases thermal efficiency
increases net output but decreases thermal efficiency
decreases net output and thermal efficiency both
increases net output and thermal efficiency both
✅ The correct answer is option B.