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- Question
In the austempering process of heat treatment, austenite changes into
Options- A. martensite
- B. troostite
- C. sorbite
- D. bainite
- Correct Answer
- bainite
- 1. For perfect intercooling in a two stage compressor,
Options- A.
- B.
- C. p1 = p3
- D. p1 = p2 p3 Discuss
- 2. In a beam of uniform strength, the bending stress developed is constant and is equal to the allowable stress at every section of the beam.
Options- A. True
- B. False Discuss
- 3. The main task of a battery in automobiles is to
Options- A. supply electricity to the alternator
- B. act as a reservoir or stabilizer of electricity
- C. supply electricity to the vehicle's electrical system at all times while the engine is running
- D. supply a large amount of power to turn the starter motor when the engine is being started Discuss
- 4. The motion of a particle round a fixed axis is
Options- A. translatory
- B. rotary
- C. circular
- D. translatory as well as rotatry Discuss
- 5. Cores are used to
Options- A. form internal cavities in the casting
- B. improve mould surface
- C. form a part of a green sand mould
- D. all of these Discuss
- 6. The limestone in the charge of a blast furnace decomposes to give lime and carbon dioxide. The lime thus obtained
Options- A. controls the grade of pig iron
- B. acts as an iron-bearing mineral
- C. supplies heat to reduce ore and melt the iron
- D. forms a slag by combining with impurities Discuss
- 7. Which of the following statement is correct about EDM machining?
Options- A. It can machine hardest materials.
- B. It produces high degree of surface finish.
- C. The tool and work are never in contact with each other.
- D. all of these Discuss
- 8. A good refrigerant should have
Options- A. high latent heat of vaporisation and low freezing point
- B. high operating pressures and low freezing point
- C. high specific volume and high latent heat of vaporisation
- D. low C.O.P. and low freezing point Discuss
- 9. Which of the following statement is correct for oblique cutting system?
Options- A. The cutting edge is inclined at an angle less than 90° with the normal to the velocity of the tool.
- B. Frequently, more than one cutting edges are in action.
- C. The chip flows on the tool face at an angle less than 90° with the normal on the cutting edge.
- D. all of the above Discuss
- 10. The maximum shear stress in a thin cylindrical shell subjected to internal pressure p is
Options- A. pd/t
- B. pd/2t
- C. pd/4t
- D. pd/8t Discuss
More questions
Correct Answer:
Correct Answer: True
Correct Answer: supply a large amount of power to turn the starter motor when the engine is being started
Correct Answer: circular
Correct Answer: all of these
Correct Answer: forms a slag by combining with impurities
Correct Answer: all of these
Correct Answer: high latent heat of vaporisation and low freezing point
Correct Answer: all of the above
Correct Answer: pd/8t
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