4291. If the section modulus of a beam is increased, the bending stress in the beam will
not change
increase
decrease
✅ The correct answer is option C.
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.
4292. If the temperature of intake air in internal combustion engine increases, then its efficiency will
remain same
decrease
increase
✅ The correct answer is option B.
4293. Lancashire boiler has __________ internal flue tubes.
one
two
three
four
✅ The correct answer is option B.
4294. The ductility of a material __________ with the increase in percentage reduction in area of a specimen under tensile test.
increases
decreases
remains same
✅ The correct answer is option A.
4295. The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by
✅ The correct answer is option C.
4296. All steam engines work on
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
none of these
✅ The correct answer is option C.
4297. The power developed by a body acted upon by a torque T newton metre (N – m) and revolving at ω radian/s is given by
T.ω (in watts)
T.ω/60 (in watts)
T.ω/75 (in kilowatts)
T.ω/4500 (in kilowatts
✅ The correct answer is option A.
4299. When cornering, the differential generates a difference in the speed of the left and right wheels.
TRUE
FALSE
✅ The correct answer is option A.
4300. In chemical dehumidification process,
dew point temperature decreases
wet bulb temperature decreases
dry bulb temperature increases
all of these
✅ The correct answer is option D.