3621. The absolute humidity is the mass of water vapour present in 1 m3 of dry air.
Agree
Disagree
✅ The correct answer is option A.
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.
3622. Which of the following screw thread is used for power transmission in one direction only.
Acme threads
Square threads
Buttress threads
Multiple threads
✅ The correct answer is option C.
3623. In a jet propulsion unit, the products of combustion after passing through the gas turbine are discharged into
atmosphere
vacuum
discharge nozzle
back to the compressor
✅ The correct answer is option C.
3624. The material which can be best cut with oxygen cutting process is
mild steel
brass
copper
aluminium
✅ The correct answer is option A.
3625. Spot welding is used for welding
lap joints in plates having 0.025 mm to 1.25 mm thickness
lap joints in plates having thickness above 3 mm
butt joints in plates having 0.025 mm to 1.25 mm thickness
butt joints in plates
✅ The correct answer is option A.
3626. If the pressure angle is __________ , a reciprocating follower will jam in its bearings.
too small
too large
✅ The correct answer is option B.
3627. The wear of bearing is proportional to velocity and pressure.
Yes
No
✅ The correct answer is option A.
3628. Which one of the following engines will have heavier flywheel than the remaining ones?
30 kW four-stroke petrol engine running at 1500 r.p.m.
30 kW two-stroke petrol engine running at 1500 r.p.m.
30 kW two-stroke diesel engine running at 750 r.p.m.
30 kW four-stroke dies
✅ The correct answer is option A.
3629. In a plain milling machine, the table can be moved
longitudinally
crosswise
vertically
all of these
✅ The correct answer is option D.
3630. The surface to be machined is marked on the pattern by
red colour
yellow colour
black colour
blue colour
✅ The correct answer is option A.