521. The consumable electrode is used in
carbon arc welding
submerged arc welding
TIG arc welding
MIG arc welding
✅ The correct answer is option D.
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.
522. The sense of coriolis component 2 ωv is same as that of the relative velocity vector v rotated at
45° in the direction of rotation of the link containing the path
45° in the direction opposite to the rotation of the link containing the path
90° in the direction of rotation of the link containing the path
180° in the direction
✅ The correct answer is option C.
523. Which of the following is the correct statement of the second law of thermodynamics?
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.
It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source.
There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy.
all of the above
✅ The correct answer is option D.
524. The function of antilock brake system (ABS) is that is
reduces the stopping distance
minimises the brake fade
maintains directional control during braking by preventing the wheels from locking
prevents nose dives du
✅ The correct answer is option C.
525. The coefficient of venturifiume, generally, lies between
0.3 to 0.45
0.50 to 0.75
0.75 to 0.95
0.95 to 1.0
✅ The correct answer is option D.
526. A progressive limit gauge has
Go’ and ‘Not go’ member on the same side of the gauge
separate ‘Go’ and ‘Not go’ members
Go’ member at one end and ‘Not go’ member at the other end
none of the above
✅ The correct answer is option A.
527. When the sleeve of a Porter governor moves downwards, the governor speed
increases
decreases
remains unaffected
first increases and th
✅ The correct answer is option B.
528. A beam of triangular section is placed with its base horizontal. The maximum shear stress occurs at
apex of the triangle
mid of the height
centre of gravity of the triangle
base of the triangle
✅ The correct answer is option B.
529. The correct sequence of phases in value engineering is
creative phase, information phase, investigation phase, evaluation phase
information phase, creative phase, investigation phase, evaluation phase
investigation phase, information phase, creative phase, evaluation phase
creative phase, invest
✅ The correct answer is option A.
530. The thermal diffusivity for gases is generally __________ those for liquids.
equal to
less than
greater than
✅ The correct answer is option C.