2691. When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to
✅ 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.
2692. Antifriction bearings are
thick lubricated bearings
plastic bearings
thin lubricated bearings
ball and roller bearin
✅ The correct answer is option D.
2694. The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
condenser efficiency
vacuum efficiency
nozzle efficiency
boiler efficiency
✅ The correct answer is option A.
2695. In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction)
P = W tan(α – φ)
P = W tan(α + φ)
P = W tan(φ – α)
P = W cos(α + φ)
✅ The correct answer is option B.
2696. Moment of inertia of a hollow rectangular section as shown in the below figure about X-X axis, is
✅ The correct answer is option A.
2697. A connecting rod subjected to an axial load may buckle with
X-axis as neutral axis
Y-axis as neutral axis
X-axis or Y-axis as neutral axis
Z-axis
✅ The correct answer is option C.
2698. The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is
equal to 1
less than 2
equal to 2
greater than 2
✅ The correct answer is option D.
2699. In induction hardening __________ is high.
current
voltage
frequency
temperature
✅ The correct answer is option C.
2700. The nozzle efficiency is the ratio of
workdone on the blades to the energy supplied to the blades
workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam
energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam
none of the above
✅ The correct answer is option C.