[A]. less than
[B]. more than
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✅ The correct answer is option A.
Mechanical Engineering MCQs
Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)
[A]. v = u + a.t
[B]. s = u.t + 1/2 a.t2
[C]. v2 = u2+2a.s
[D]. all of these
✅ The correct answer is option D.
A thin cylindrical shell of diameter (d) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to volumetric strain is
[A].
[B].
[C].
[D].
✅ The correct answer is option D.
In open channels, the specific energy is the
[A]. total energy per unit discharge
[B]. total energy measured with respect to the datum passing through the bottom of the channel
[C]. total energy measured above the horizontal datum
[D]. kinetic energy plotted above the free surface of water
✅ The correct answer is option B.
A single point thread cutting tool should ideally have
[A]. zero rake angle
[B]. positive rake angle
[C]. negative rake angle
[D]. point angle
✅ The correct answer is option A.
In back-hand welding, the angle between the welding torch and the work is kept as
[A]. 30°-40°
[B]. 40°-50°
[C]. 50°-60°
[D]. 60°-70°
✅ The correct answer is option B.
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of
[A]. copper
[B]. aluminium
[C]. steel
[D]. brass
✅ The correct answer is option C.
The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called
[A]. mechanical efficiency
[B]. overall efficiency
[C]. volumetric efficiency
[D]. relative efficiency
✅ The correct answer is option C.
The by-pass factor for a cooling coil
[A]. increases with increase in velocity of air passing through it
[B]. decreases with increase in velocity of air passing through it
[C]. remains unchanged with increase in velocity of air passing through it
[D]. may increase or decrease with increase in velocity of air passing through it depending upon the condition of air entering
✅ The correct answer is option A.
For a beam, as shown in the below figure, the maximum deflection is .
[A]. True
[B]. False
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✅ The correct answer is option B.