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- Question
The temperature point at which the change ends on heating the steel is called
Options- A. lower critical point
- B. upper critical point
- C. point of recalescence
- D. point of decalescence
- Correct Answer
- upper critical point
- 1. An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
Options- A. equal to
- B. directly proportional
- C. inversely proportional Discuss
- 2. A point, in a compressible flow where the velocity of fluid is zero, is called
Options- A. critical point
- B. vena contracta
- C. stagnation point
- D. none of these Discuss
- 3. In a reciprocating steam engine, the heat energy in the steam is converted into mechanical work by the to and fro motion of the piston.
Options- A. Agree
- B. Disagree Discuss
- 4. The size of a reactor at which the chain reaction can be initiated (i.e. when system becomes critical) with just enough fissionable material (called critical mass of fuel) is known as critical size of reactor.
Options- A. Correct
- B. Incorrect Discuss
- 5. A flow is called sonic, if the Mach number is unity.
Options- A. Agree
- B. Disagree Discuss
- 6. A safety valve mainly used with locomotive and marine boilers is
Options- A. lever safety valve
- B. dead weight safety valve
- C. high steam and low water safety valve
- D. spring loaded safety valve Discuss
- 7. The Whitworth quick return motion mechanism is formed in a slider crank chain when the
Options- A. coupler link is fixed
- B. longest link is a fixed link
- C. slider is a fixed link
- D. smallest link is a fixed link Discuss
- 8. In a compressor, work is done on the piston during suction of air and work is done by the piston during compression as well as delivery of air.
Options- A. Agree
- B. Disagree Discuss
- 9. In a hot chamber die casting machine
Options- A. melting pot is separate from the machine
- B. melting pot is an integral part of the machine
- C. melting pot may have any location
- D. high temperature and pressure is used Discuss
- 10. The static friction
Options- A. bears a constant ratio to the normal reaction between the two surfaces
- B. is independent of the area of contact, between the two surfaces
- C. always acts in a direction, opposite to that in which the body tends to move
- D. all of the above Discuss
More questions
Correct Answer: directly proportional
Correct Answer: stagnation point
Correct Answer: Agree
Correct Answer: Correct
Correct Answer: Agree
Correct Answer: spring loaded safety valve
Correct Answer: coupler link is fixed
Correct Answer: Agree
Correct Answer: melting pot is an integral part of the machine
Correct Answer: all of the above
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