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- Question
Sulphur in cast iron
Options- A. makes the iron soft and easily machinable
- B. increases hardness and brittleness
- C. makes the iron white and hard
- D. aids fusibility and fluidity
- Correct Answer
- increases hardness and brittleness
- 1. Which of the following statement is correct for orthogonal cutting system?
Options- A. The cutting edge of the tool is perpendicular to the direction of tool travel.
- B. The cutting edge clears the width of the workpiece on either ends.
- C. The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge.
- D. all of the above Discuss
- 2. The compressor efficiency is defined as the ratio of volume of free air delivery per stroke to the swept volume of the piston.
Options- A. Correct
- B. Incorrect Discuss
- 3. When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be
Options- A. square threads
- B. acme threads
- C. knuckle threads
- D. buttress threads Discuss
- 4. One kg of carbon requires 8/3 kg of oxygen for its complete combustion and produces 11/3 kg of carbon dioxide gas.
Options- A. Agree
- B. Disagree Discuss
- 5. The overall efficiency for a Pelton wheel lies between
Options- A. 0.50 to 0.65
- B. 0.65 to 0.75
- C. 0.75 to 0.85
- D. 0.85 to 0.90 Discuss
- 6. For unequal width of butt straps, the thickness of butt straps are
Options- A. 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
- B. 0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
- C. 0.75 t for both the straps on the inside and outside
- D. 0.625 t for both the straps on the inside and outside Discuss
- 7. A notch is used to measure __________ of liquids.
Options- A. pressure
- B. discharge
- C. velocity
- D. volume Discuss
- 8. Two closely-coiled helical springs 'A' and 'B' of the same matenal, same number of turns and made from same wire are subjected to an axial load W. The mean diameter of spring 'A' is double the mean diameter of spring 'B'. The ratio of deflections in spring 'B' to spring 'A' will be
Options- A. 1/8
- B. 1/4
- C. 2
- D. 4 Discuss
- 9. The centre distance between two meshing involute gears is equal to
Options- A.
- B.
- C.
- D.
Discuss
- 10. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
Options- A. neutral equilibrium
- B. stable equilibrium
- C. unstable equilibrium
- D. none of these Discuss
More questions
Correct Answer: all of the above
Correct Answer: Incorrect
Correct Answer: buttress threads
Correct Answer: Agree
Correct Answer: 0.85 to 0.90
Correct Answer: 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
Correct Answer: discharge
Correct Answer: 1/8
Correct Answer:
Correct Answer: stable equilibrium
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