2961. The width of the bucket for a Pelton wheel is generally __________ the diameter of jet.
double
three times
four times
five times
✅ The correct answer is option D.
Mechanical Engineering
Prepare with the best Mechanical Engineering MCQs with answers and explanations for exams, interviews, and job tests. Our collection covers core topics such as engineering mechanics, thermodynamics, strength of materials, theory of machines, fluid mechanics, heat transfer, manufacturing processes, machine design, and power plant engineering. These Mechanical Engineering multiple-choice questions are designed for students, fresh graduates, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your technical knowledge and problem-solving ability with our updated and comprehensive Mechanical Engineering MCQs.
2962. In a steam engine, the link constitutes a
piston, piston rod and crosshead
connecting rod with big and small end brasses, caps and bolts
crank pin, crankshaft and flywheel
all of the above
✅ The correct answer is option D.
2963. A mortise gauge is a
striking tool
planing tool
boring tool
marking tool
✅ The correct answer is option D.
2964. The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the
unbalanced couples are caused only at higher speeds
unbalanced forces are not dangerous at higher speeds
effects of unbalances are proportional to the square of the speed
effects of unbalances
✅ The correct answer is option C.
2965. The greater the pressure difference in throttling, the lesser is the irreversibility.
Yes
No
✅ The correct answer is option B.
2966. The damper fluid leakage typically occur from
upper damper mounting
bottom of damper
clearance between inner and outer tubes of damper
coil spring mounting
✅ The correct answer is option C.
2967. A pattern is used to make the mould cavity for pouring the molten metal for casting.
Yes
No
✅ The correct answer is option A.
2968. The grinding of long, slender shafts or bars is usually done by
infeed grinding
through feed grinding
endfeed grinding
any one of these
✅ The correct answer is option B.
2969. For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be
one-half the height of chimney
equal to the height of chimney
two times the height of chimney
four times the height
✅ The correct answer is option B.
2970. The objective of caulking in a riveted joint is to make the joint
free from corrosion
stronger in tension
free from stress
leak-proof
✅ The correct answer is option D.