1931. Which of the following cotter joint will be used to connect strap end of a connecting rod ?
Spigot and socket cotter joint
Sleeve and cotter joint
Gib and cotter joint
any one of these
✅ 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.
1932. A kinematic chain is known as a mechanism when
none of the links is fixed
one of the links is fixed
two of the links are fixed
none of these
✅ The correct answer is option B.
1933. In a four stroke engine for each crankshaft revolution, the camshaft revolves
one-half turn
one turn
two turns
four turns
✅ The correct answer is option A.
1934. A single ended Scotch marine steam boiler may have one to four furnaces which enter from front end of the boiler.
Correct
Incorrect
✅ The correct answer is option A.
1935. In a reversible adiabatic process, the ratio of T1/T2 is equal to
✅ The correct answer is option B.
1936. A point, in a compressible flow where the velocity of fluid is zero, is called
critical point
vena contracta
stagnation point
none of these
✅ The correct answer is option C.
1937. Detonation is harmful due to
increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine
excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls
high intensity of knock causes crankshaft vibration and the engine runs rough
none of the above
✅ The correct answer is option D.
1938. Critical damping is a function of
mass and stiffness
mass and damping coefficient
mass and natural frequency
damping coefficient an
✅ The correct answer is option A.
1939. In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be
double
four times
eight times
sixteen times
✅ The correct answer is option A.
1940. The secondary unbalanced force is maximum __________ in one revolution of the crank.
two times
four times
eight times
sixteen times
✅ The correct answer is option B.