3671. The minimum parking brake force is generally __________ of gross vehicle mass (GVM).
5%
10%
15%
20%
✅ 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.
3672. By higher octane number of spark ignition fuel, it is meant that the fuel has
higher heating value
higher flash point
lower volatility
longer ignition delay
✅ The correct answer is option D.
3673. Stage efficiency is also known as
diagram efficiency
nozzle efficiency
gross efficiency
none of these
✅ The correct answer is option C.
3674. Lathe bed is made of
mild steel
alloy steel
pig iron
chilled cast iron
✅ The correct answer is option D.
3675. Mechanical efficiency of a centrifugal pump is the ratio of
energy available at the impeller to the energy supplied to the pump by the prime mover
actual workdone by the pump to the energy supplied to the pump by the prime mover
energy supplied to the pump to the energy available at the impeller
manometric head to the
✅ The correct answer is option A.
3676. The reciprocating refrigerant compressors are very suitable for
small displacements and low condensing pressures
large displacements and high condensing pressures
small displacements and high condensing pressures
large displacements an
✅ The correct answer is option C.
3677. When the engine speed increases, the ignition timing must be advanced.
Yes
No
✅ The correct answer is option A.
3678. The positive plates of a lead acid battery has
lead peroxide (PbO2)
spongy lead (Pb)
lead sulphate (PbSO4)
sulphuric acid (H2SO4)
✅ The correct answer is option A.
3679. The loss of pressure head in case of laminar flow is proportional to
velocity
(velocity)2
(velocity)3
(velocity)4
✅ The correct answer is option A.
3680. If a pendulum is taken 1 km below the earth surface in a mine, it will __________ in time.
gain
loose
✅ The correct answer is option A.