3151. The main function of a resonator is that it
regulates the intake air flow rate
reduces the intake air noise .
enhances intake efficiency
regulates the intake a
✅ 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.
3152. A vapour absorption refrigerator uses __________ as a refrigerant.
water
ammonia
freon
aqua-ammonia
✅ The correct answer is option D.
3153. A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is
2.89 kN
8.29 kN
9.28 kN
28.9 kN
✅ The correct answer is option B.
3154. For a steel containing 0.8% carbon
there is no critical point
there is only one critical point
there are two critical points
there can be any numbe
✅ The correct answer is option B.
3155. A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because
it is easier to see through the glass tube
glass tube is cheaper than a metallic tube
it is not possible to conduct this experiment with any other tube
all of the above
✅ The correct answer is option A.
3156. The negative plates of a lead acid battery has
lead peroxide (PbO2)
spongy lead (Pb)
lead sulphate (PbSO4)
sulphuric acid (H2SO4)
✅ The correct answer is option B.
3157. The portion of the blast furnace below its widest cross-section is called
hearth
stack
bosh
throat
✅ The correct answer is option C.
3158. Fouling factor is used
in heat exchanger design as a safety factor
in case of Newtonian fluids
when a liquid exchanges heat with a gas
none of the above
✅ The correct answer is option A.
3159. In order to check the clearance between two mating surfaces, a __________ gauge should be used.
ring
plug
feeler
✅ The correct answer is option C.
3160. Petrol is distilled at
65° to 220°C
220° to 345°C
345° to 470°C
470° to 550°C
✅ The correct answer is option A.