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- Question
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is __________ the momentum of body having mass m2.
Options- A. equal to
- B. less than
- C. greater than
- Correct Answer
- greater than
- 1. The abrasive recommended for grinding materials of high tensile strength is
Options- A. silicon carbide
- B. aluminium oxide
- C. sand stone
- D. diamond Discuss
- 2. The unit of Young's modulus is same as that of stress.
Options- A. True
- B. False Discuss
- 3. Glazing in grinding wheels can be decreased by
Options- A. using a harder wheel or by increasing the wheel speed
- B. using a softer wheel or by decreasing the wheel speed
- C. using a harder wheel or by decreasing the wheel speed
- D. using a softer wheel or by increasing the wheel speed Discuss
- 4. Threading is an operation of
Options- A. smoothing and squaring the surface around a hole
- B. sizing and finishing a small diameter hole
- C. producing a hole by removing metal along the circumference of a hollow cutting tool
- D. cutting helical grooves on the external cylindrical surface Discuss
- 5. Admirality gun metal contains
Options- A. 60% copper, 35% zinc and 5% manganese
- B. 76% copper, 20% silicon and 4% zinc
- C. 82% copper, 12% zinc and 6% manganese
- D. 88% copper, 10% tin and 2% zinc Discuss
- 6. A thin cylindrical shell of diameter (d), length (l) and thickness (t)is subjected to an internal pressure (p). The hoop stress in the shell is
Options- A. pd/t
- B. pd/2t
- C. pd/4t
- D. pd/6t Discuss
- 7. A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The maximum shear stress will be
Options- A. 400 MPa
- B. 500 MPa
- C. 900 MPa
- D. 1400 MPa Discuss
- 8. The path taken by intake air is
Options- A. carburettor (or throttle body) - air cleaner - intake manifold - intake ports - cylinders
- B. air cleaner - carburettor (or throttle body) -intake ports - intake manifold - cylinders
- C. air cleaner - intake manifold - carburettor (or throttle body) - intake ports - cylinders
- D. air cleaner - carburettor (or throttle body) - intake manifold - intake ports - cylinders Discuss
- 9. The angular velocity (in rad / s) of a body rotating at N revolutions per minute is
Options- A. ?N/60
- B. ?N/180
- C. 2?N/60
- D. 2?N/180 Discuss
- 10. Cut-off governing as compared to throttle governing is
Options- A. less efficient and less economical
- B. less efficient and more economical
- C. more efficient and less economical
- D. more efficient and more economical Discuss
More questions
Correct Answer: aluminium oxide
Correct Answer: True
Correct Answer: using a softer wheel or by decreasing the wheel speed
Correct Answer: cutting helical grooves on the external cylindrical surface
Correct Answer: 88% copper, 10% tin and 2% zinc
Correct Answer: pd/2t
Correct Answer: 500 MPa
Correct Answer: air cleaner - carburettor (or throttle body) - intake manifold - intake ports - cylinders
Correct Answer: 2?N/60
Correct Answer: more efficient and more economical
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