A. Frequency counter
B. Tachometer
C. Strobometer
D. Speedometer
✅ The correct answer is option C.
Engineering MCQs
Knocking tendency in a petrol engine decreases with increasing
A. Supercharging
B. Compression ratio
C. Wall temperature
D. Engine speed
✅ The correct answer is option D.
Function of gear box is to
A. Reduce the speed
B. Obtain variable speed
C. Increase the speed
D. Produce high torque
✅ The correct answer is option B.
__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
A. Beryllia
B. Zirconia
C. Alumina
D. Magnesia
✅ The correct answer is option C.
__________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.
A. Lancing
B. Shot peening
C. Slugging
D. Spinning
✅ The correct answer is option B.
Viscoelastic behaviour is observed in __________ materials.
A. Non-crystalline organic polymeric
B. Ceramic
C. All crystalline
D. All of the above
✅ The correct answer is option A.
Routing in production, planning & control is concerned with the
A. Sequence of operation to be performed
B. Progress of work performed
C. Authorisation of work to be performed
D. Balancing of load on machines
✅ The correct answer is option A.
For the irreversible reaction, Ca+ 2C = Ca C₂ , Δ H°298 = – 60000 J . mole⁻¹ . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be
A. 30000 J
B. 60000 J
C. 90000 J
D. 240000 J
✅ The correct answer is option C.
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
A. Grashoff number
B. Grashoff number & Reynolds number
C. Reynolds number
D. Grashoff number & Prandtl number
✅ The correct answer is option D.
Steel is welded using the __________ flame.
A. Carburising
B. Neutral
C. Oxidising
D. All of the above
✅ The correct answer is option B.