Discussion
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- Question
The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is __________ of the total supply head.
Options- A. one-half
- B. one-third
- C. two-third
- Correct Answer
- one-third
- 1. The process of undercooling is generally brought about by
Options- A. circulating more quantity of cooling water through the condenser
- B. using water colder than the main circulating water
- C. employing a heat exchanger
- D. any one of the above Discuss
- 2. In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then __________ is employed.
Options- A. fuel pump
- B. injector
- C. carburettor
- D. none of these Discuss
- 3. The boiling point of carbon dioxide is
Options- A. -20.5°C
- B. -50°C
- C. -63.3°C
- D. -78.3°C Discuss
- 4. The painting of automobiles is done to
Options- A. prevent rust from growing on the body
- B. improve its external appearance
- C. retain the characteristics of steel for long
- D. all of these Discuss
- 5. In counter-current flow heat exchanger, the logarithmic temperature difference between the fluids is __________ as compared to parallel flow heat exchanger.
Options- A. same
- B. less
- C. greater Discuss
- 6. The axial flow compressor is preferred in air-craft gas turbines because of
Options- A. low frontal area
- B. higher thrust
- C. high pressure rise
- D. none of these Discuss
- 7. The main purpose of a boring operation, as compared to drilling, is to
Options- A. drill a hole
- B. finish the drilled hole
- C. correct the hole
- D. enlarge the existing hole Discuss
- 8. Face centred cubic space lattice is found in gamma-iron, aluminium, copper, lead, silver and nickel.
Options- A. True
- B. False Discuss
- 9. The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value of n depends upon
Options- A. work material
- B. tool material
- C. working conditions
- D. type of chip produced Discuss
- 10. Which of the following operations can be performed with milling cutters?
Options- A. cutting key ways on shafts
- B. cutting external screw threads
- C. cutting teeth of spur gears
- D. all of these Discuss
More questions
Correct Answer: any one of the above
Correct Answer: carburettor
Correct Answer: -78.3°C
Correct Answer: all of these
Correct Answer: greater
Correct Answer: low frontal area
Correct Answer: enlarge the existing hole
Correct Answer: True
Correct Answer: tool material
Correct Answer: all of these
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