2451. Power screws are used to convert rotary motion into translatory motion.
TRUE
FALSE
✅ 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.
2452. The diameter of a cylindrical shell of a Scotch marine boiler varies from
1.5 to 2 m
2.5 to 3.5 m
3.5 to 4.5 m
none of these
✅ The correct answer is option B.
2453. In case of liquids and gases, the heat transfer takes place according to
conduction
convection
radiation
none of these
✅ The correct answer is option B.
2454. Metal patterns require __________ draft allowance than wooden patterns.
more
less
✅ The correct answer is option B.
2455. The recrystallisation temperature of steel is
400° C
600° C
800° C
none of these
✅ The correct answer is option C.
2456. The conditioned air supplied to the room must have the capacity to take up
room sensible heat load only
room latent heat load only
both room sensible heat and latent heat loads
none of the above
✅ The correct answer is option C.
2457. The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ is equal to 6/6 + v.
10 m/s
12.5 m/s
15 m/s
20 m/s
✅ The correct answer is option D.
2458. The bearing characteristic number in a hydrodynamic bearing depends upon
length, width and load
length, width and speed
viscosity, speed and load
viscosity, speed and b
✅ The correct answer is option D.
2459. Odometer is an instrument used for measurement of
power
fuel consumption
engine r.p.m.
distance
✅ The correct answer is option D.
2460. Which of the following statement is correct according to Clausis statement of second law off thermodynamics?
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.
It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.
none of the above
✅ The correct answer is option B.