1591. The self ignition temperature of Diesel as compared to petrol is
higher
lower
same
depends on fuel qualit
✅ 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.
1592. It is __________ to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.
possible
impossible
✅ The correct answer is option B.
1593. The stage efficiency is the ratio of energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam.
TRUE
FALSE
✅ The correct answer is option B.
1594. The ratio of driving tensions in V-belt drives is __________ flat belt drives.
equal to
sin α times more than
sin α times less than
cosec α times more tha
✅ The correct answer is option D.
1595. The malleable material should be plastic but is not essential to be so strong.
Agree
Disagree
✅ The correct answer is option A.
1596. For the beam shown in the below figure, the shear force diagram between A and B is
a horizontal line
a vertical line
an inclined line
a parabolic curve
✅ The correct answer is option D.
1597. A mixture containing 65% of iso-octane and 35% of normal heptane will have
cetane number 65
octane number 65
qetane number 35
octane number 35
✅ The correct answer is option B.
1598. The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value of n depends upon
work material
tool material
working conditions
type of chip produced
✅ The correct answer is option B.
1599. Newton’s law of viscosity is a relationship between
pressure, velocity and temperature
shear stress and rate of shear strain
shear stress and velocity
rate of shear strain a
✅ The correct answer is option B.
1600. The flow in a pipe or channel is said to be uniform when
the liquid particles at all sectons have the same velocities
the liquid particles at different sections have different velocities
the quantity of liquid flowing per second is constant
each liquid particle h
✅ The correct answer is option A.