781. The minimum temperature to which water can be cooled in a cooling tower is
dew point temperature of air
wet bulb temperature of air
dry bulb temperature of air
ambient air temperatur
✅ 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.
782. The top and sides of the table of a shaper usually have
L-type slots
T-type slots
I-type slots
any one of these
✅ The correct answer is option B.
783. Kinematic viscosity is the product of dynamic viscosity and the density of the liquid.
Yes
No
✅ The correct answer is option B.
784. The torch used for oxygen cutting is same as for oxy-acetylene welding.
Yes
No
✅ The correct answer is option B.
785. In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
reversed Carnot cycle
reversed Joule cycle
reversed Brayton cycle
reversed Otto cycle
✅ The correct answer is option C.
786. The overall efficiency of an impulse turbine is the ratio of the actual power produced by the turbine to the energy actually supplied by the turbine.
Yes
No
✅ The correct answer is option A.
787. An universal coupling is a type of __________ coupling.
rigid
flexible
✅ The correct answer is option B.
788. The freezing point of R-12 is
-86.6°C
-95.2°C
-107.7°C
-135.8°C
✅ The correct answer is option D.
789. The temperature at which tyre inflation pressure should be checked is
20°C
25°C
35°C
ambient temperature
✅ The correct answer is option D.
790. The commonly used antifreeze solution in automobiles is
carbon disulphide
ethylene glycol
ammonium chloride
freon-12
✅ The correct answer is option B.