1
2
3
4
✅ The correct answer is option D.
Mechanical Engineering MCQs
The time taken by a trained worker to perform an operation, while working a steady pace, is known as
standard time
normal time
representative time
none of these
✅ The correct answer is option A.
The electron beam welding can be carried out in
open air
a shielded gas environment
vacuum
a pressurised inert ga
✅ The correct answer is option C.
Which of the following is a reversible non-flow process?
Isochoric process
Isobaric process
Hyperbolic process
all of these
✅ The correct answer is option D.
The virtual or equivalent eccentric for the Meyer’s expansion valve is defined as an eccentric having such a length and angle of advance that will cause cut-off to take place at the same position, as is caused by the combined effect of main eccentric and expansion eccentric.
Right
Wrong
✅ The correct answer is option A.
The metal extrusion process is generally used for producing
uniform solid sections
uniform hollow sections
uniform solid and hollow sections
varying solid and holl
✅ The correct answer is option C.
In a centrifugal compressor, the ratio of the __________ to the blade velocity is called slip factor.
inlet whirl velocity
outlet whirl velocity
inlet velocity of flow
outlet velocity of flo
✅ The correct answer is option D.
The modulus of elasticity for mild steel is approximately equal to
10 kN/mm2
80 kN/mm2
100 kN/mm2
210 kN/mm2
✅ The correct answer is option D.
The infeed grinding is used to
produce tapers
grind shoulders and formed surfaces
grind long, slender shafts or bars
ail of these
✅ The correct answer is option B.
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis
at the origin
below the origin
above the origin
any one of these
✅ The correct answer is option B.