5031. A smooth cylinder lying on its convex surface remains in __________ equilibrium.
stable
unstable
neutral
✅ 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.
5032. A load which is spread over a beam in such a manner that it varies uniformly over the whole length of abeam is called uniformly __________ load.
distributed
varying
✅ The correct answer is option B.
5033. The operation of removing trapped air from the hydraulic braking system is known as
trapping
tapping
bleeding
cleaning
✅ The correct answer is option C.
5034. A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
[A]. equal to.
[B]. less than
[C]. more than
null
✅ The correct answer is option C.
5035. The gears are termed as medium velocity gears, if their peripheral velocity is
[A]. 1 – 3 m/s
[B]. 3 – 15 m/s
[C]. 15 – 30 m/s
[D]. 30 – 50 m/s
✅ The correct answer is option B.
5036. The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)
[A]. w x Q x H
[B]. w x Q x hf
[C]. w x Q (H – hf)
[D]. w x Q (H + hf)
✅ The correct answer is option C.
5037. The secondary fuel used in nuclear power plants is
[A]. U233 and Pu239
[B]. U235 and Th232
[C]. U235 and Pu238
[D]. U233 and Pu238
✅ The correct answer is option A.
5038. The centre of gravity of the volume of the liquid displaced is called
[A]. centre of pressure
[B]. centre of buoyancy
[C]. metacentre
[D]. none of these
✅ The correct answer is option B.
5039. In a free nappe,
[A]. the pressure below the nappe is atmospheric
[B]. the pressure below the nappe is negative
[C]. the pressure above the nappe is atmospheric
[D]. the pressure above the nappe is negative
✅ The correct answer is option A.
5040. The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency)
[A]. ηS = ηB x ηN
[B]. ηS = ηB/ηN
[C]. ηS = ηN/ηB
[D]. none of these
✅ The correct answer is option A.