1221. Damper in an automobile is used to
absorb the energy
dissipate the energy
release the energy
increase the energy
✅ The correct answer is option B.
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.
1222. All perfect gases change in volume by 1 / 273th of its original volume at 0°C for every 1°C change in temperature, when the pressure remains constant. This statement is called
Boyle’s law
Charles’ law
Gay-Lussac law
Joule’s law
✅ The correct answer is option B.
1223. For perfect intercooling in a three stage compressor,
p1p2 = p3p4
p1p3 = p2p4
✅ The correct answer is option A.
1224. Cast iron has
high compressive strength
excellent machinability
good casting characteristic
all of these
✅ The correct answer is option D.
1225. The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is
slow speed with radial flow at outlet
medium speed with radial flow at outlet
high speed with radial flow at outlet
high speed with mixed
✅ The correct answer is option D.
1227. A rocket engine uses __________ for the combustion of its fuel.
surrounding air
compressed atmospheric air
its own oxygen
none of these
✅ The correct answer is option C.
1229. The specific heat at constant volume is
the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure
the amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume
the amount of heat required to raise the temperature of 1 kg of water through one degree
any one of the above
✅ The correct answer is option B.
1230. When the temperature of the surrounding is higher than the temperature of the body, then the heat loss by convection from the body to the surrounding will be
positive
negative
zero
none of these
✅ The correct answer is option B.