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- Question
Free carbon in iron makes the metal
Options- A. soft and gives a coarse grained crystalline structure
- B. soft and gives a fine grained crystalline structure
- C. hard and gives a coarse grained crystalline structure
- D. hard and gives a fine grained crystalline structure
- Correct Answer
- soft and gives a coarse grained crystalline structure
- 1. The elongation of a conical bar under its own weight is __________ that of prismatic bar of the same length.
Options- A. equal to
- B. half
- C. one-third
- D. two-third Discuss
- 2. The liquid used in manometers should have
Options- A. low density
- B. high density
- C. low surface tension
- D. high surface tension Discuss
- 3. According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.
Options- A. first kind
- B. second kind Discuss
- 4. The unit of power in S.I. units is kilowatt.
Options- A. True
- B. False Discuss
- 5. The purpose of transmission in an automobile is
Options- A. to vary the speed of automobile
- B. to vary the torque at the wheels
- C. to vary the power of automobile
- D. none of these Discuss
- 6. The shear force of a cantilever beam of length l and carrying a gradually varying load from zero at the free end and w per unit length at the fixed end is __________ at the fixed end.
Options- A. zero
- B. wl/4
- C. wl/2
- D. wl Discuss
- 7. The height of each tooth of a broach is
Options- A. same throughout
- B. in progressively decreasing order
- C. in progressively increasing order
- D. none of these Discuss
- 8. A feed gear box for a screw cutting lathe is designed on the basis of
Options- A. geometric progression
- B. arithmetic progression
- C. harmonic progression
- D. none of these Discuss
- 9. The maximum bending moment of a simply supported beam of span l and carrying a point load W at the centre of beam, is
Options- A. Wl/4
- B. Wl/2
- C. Wl
- D. Wl2/4 Discuss
- 10. A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as
Options- A. blow off cock
- B. fusible plug
- C. superheater
- D. stop valve Discuss
More questions
Correct Answer: one-third
Correct Answer: high surface tension
Correct Answer: second kind
Correct Answer: True
Correct Answer: to vary the torque at the wheels
Correct Answer: wl/2
Correct Answer: in progressively increasing order
Correct Answer: geometric progression
Correct Answer: Wl/4
Correct Answer: stop valve
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