3101. 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.
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.
3102. The colour of exhaust from diesel engine is generally
white
bluish
black
violent
✅ The correct answer is option C.
3103. When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
die casting method
slush casting method
permanent mould casting method
centrifugal casting me
✅ The correct answer is option C.
3104. 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.
3105. The discharge through a nozzle is maximum for a certain value of exit pressure. This pressure is known as critical pressure.
Agree
Disagree
✅ The correct answer is option A.
3106. The purpose of a thermostat in an engine cooling system is to
prevent the coolant from boiling
allow the engine to warm up quickly
indicate the coolant temperature
pressurise the system
✅ The correct answer is option B.
3107. 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.
3108. Thermosetting plastics are those materials which
are formed into shape under heat and pressure and results in a permanently hard product
do not become hard with the application of heat and pressure and no chemical change occurs
are flexible and can withstand considerable wear under suitable conditions
are used as a friction
✅ The correct answer is option A.
3109. 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.
3110. Which of the following is a turning pair?
Piston and cylinder of a reciprocating steam engine
Shaft with collars at both ends fitted into a circular hole
Lead screw of a lathe with nut
Ball and a socket join
✅ The correct answer is option B.