Discussion
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- Question
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)
Options- A. w.A
- B. wx
- C. wAx
- D. wA/x
- Correct Answer
- wAx
- 1. When filing or machining cast iron makes our hands black, then it shows that __________ is present in cast iron.
Options- A. cementite
- B. free graphite Discuss
- 2. The broaching operation in which either the work or the tool moves across the other, is known as
Options- A. pull broaching
- B. push broaching
- C. surface broaching
- D. continuous broaching Discuss
- 3. The velocity of air entering in a rocket is __________ as compared to an aircraft.
Options- A. zero
- B. less
- C. more
- D. same Discuss
- 4. Gas turbine as compared to internal combustion engine
Options- A. can be driven at a very high speed
- B. produces uniform torque
- C. has more efficiency
- D. all of these Discuss
- 5. Which one of the following sets of constituents is expected in equilibrium cooling of a hyper-eutectoid steel from austenitic state?
Options- A. Ferrite and pearlite
- B. Cementite and pearlite
- C. Ferrite and bainite
- D. Cementite and martensite Discuss
- 6. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir.
Options- A. Correct
- B. Incorrect Discuss
- 7. In a petrol engine, the high voltage for spark plug is in the order of
Options- A. 1000 volts
- B. 2000 volts
- C. 11 kilovolts
- D. 22 kilovolts Discuss
- 8. In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at
Options- A. diffuser inlet radius
- B. diffuser outlet radius
- C. impeller inlet radius
- D. impeller outlet radius Discuss
- 9. Which of the following material has maximum ductility?
Options- A. Mild steel
- B. Copper
- C. Nickel
- D. Aluminium Discuss
- 10. For maximum power, the velocity of the belt will be
Options- A.
- B.
- C.
- D. none of these Discuss
More questions
Correct Answer: free graphite
Correct Answer: surface broaching
Correct Answer: zero
Correct Answer: all of these
Correct Answer: Cementite and pearlite
Correct Answer: Correct
Correct Answer: 22 kilovolts
Correct Answer: diffuser outlet radius
Correct Answer: Mild steel
Correct Answer:
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