5201. 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.
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.
5202. 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.
5203. 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.
5204. A structure whose width is __________ the width of the channel, is called a flumed structure.
[A]. less than
[B]. more than
null
null
✅ The correct answer is option A.
5205. 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.
5206. 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.
5207. Gas turbine as compared to steam turbine
[A]. requires less space for installation
[B]. has compressor and combustion chamber
[C]. has less efficiency
[D]. all of these
✅ The correct answer is option D.
5208. The detonation is also called knocking or pinking.
[A]. Yes
[B]. No
null
null
✅ The correct answer is option A.
5209. The difference between DOT 3 and DOT 4 brake fluids is
[A]. DOT 4 fluid has a higher boiling point than DOT 3 fluid
[B]. DOT 4 fluid has a lower boiling point than DOT 3 fluid
[C]. DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
[D]. DOT 4 fluid is more resistant to freezing than DOT 3 fluid
✅ The correct answer is option A.
5210. The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is
[A]. 40%
[B]. 50%
[C]. 60%
[D]. 80%
✅ The correct answer is option B.