2941. When a body is subjected to a direct tensile stress (σ) in one plane, then maximum normal stress occurs at a section inclined at __________ to the normal of the section.
0°
30°
45°
90°
✅ 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.
2942. A perpetual motion machine of the first kind is __________ according to first law of thermodynamics.
possible
impossible
✅ The correct answer is option B.
2943. The heating of air, without any change in its specific humidity, is known as sensible heating.
TRUE
FALSE
✅ The correct answer is option A.
2944. The wheels of a moving car possess
potential energy only
kinetic energy of translation only
kinetic energy of rotation only
kinetic energy of tran
✅ The correct answer is option D.
2945. When the shear angle is large
path of shear is short and chip is thin
path of shear is large and chip is thick
path of shear is short and chip is thick
path of shear is large
✅ The correct answer is option A.
2947. A closed cycle gas turbine works on
Carnot cycle
Rankine cycle
Ericsson cycle
Joule cycle
✅ The correct answer is option D.
2949. Valve overlap is the number of degrees of camshaft rotation during which
both valves are closed
both valves are open
both ‘a’ and ‘b’
none of these
✅ The correct answer is option B.
2950. The diagram factor is the ratio of the
area of the actual indicator diagram to the area of theoretical indicator diagram
actual workdone per stroke to the theoretical workdone per stroke
actual mean effective pressure to the theoretical mean effective pressure
any one of the above
✅ The correct answer is option D.