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- Question
The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as
Options- A. conduction
- B. free convection
- C. forced convection
- D. radiation
- Correct Answer
- free convection
- 1. The clearance in the engine cylinder has no effect on the steam consumption.
Options- A. True
- B. False Discuss
- 2. The critical thickness of insulation for a sphere is
Options- A. k/h0
- B. 2k/h0
- C. h0/k
- D. h0/2k Discuss
- 3. The distance, between the point of projection and the point where the projectile strikes the ground, is known as range.
Options- A. Correct
- B. Incorrect Discuss
- 4. The total energy possessed by a system of moving bodies
Options- A. is constant at every instant
- B. varies from point to point
- C. is maximum in the start and minimum at the end
- D. is minimum in the start and maximum at the end Discuss
- 5. A fluid whose viscosity changes with the rate of deformation or shear strain is known as non-newtonian fluid.
Options- A. True
- B. False Discuss
- 6. In arc welding, the electric arc is produced between the work and the electrode by
Options- A. voltage
- B. flow of current
- C. contact resistance
- D. all of these Discuss
- 7. In a gas turbine, air is obtained from the atmosphere and compressed in an air compressor.
Options- A. True
- B. False Discuss
- 8. In electric resistance welding, pressure is applied just after the completion of current.
Options- A. True
- B. False Discuss
- 9. Mohr's circle is used to determine the stresses on an oblique section of a body subjected to
Options- A. direct tensile stress in one plane accompanied by a shear stress
- B. direct tensile stress in two mutually perpendicular directions
- C. direct tensile stress in two mutually perpendicular directions accompanied by a simple shear stress
- D. all of the above Discuss
- 10. The torque transmitted by a hollow shaft of outer diameter (D) and inner diameter (d) is
Options- A.
- B.
- C.
- D.
Discuss
More questions
Correct Answer: False
Correct Answer: 2k/h0
Correct Answer: Correct
Correct Answer: is constant at every instant
Correct Answer: True
Correct Answer: contact resistance
Correct Answer: True
Correct Answer: True
Correct Answer: all of the above
Correct Answer:
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