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- Question
According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.
Options- A. True
- B. False
- Correct Answer
- False
- 1. Which of the following is an amorphous material?
Options- A. Mica
- B. Silver
- C. Lead
- D. Glass Discuss
- 2. The critical pressure ratio for initially dry saturated steam is
Options- A. 0.546
- B. 0.577
- C. 0.582
- D. 0.601 Discuss
- 3. Hydrogen is the __________ substance.
Options- A. lightest
- B. heaviest Discuss
- 4. Cemented carbide tools are generally poor in shear.
Options- A. Yes
- B. No Discuss
- 5. Hot piercing is extensively used for making bolts and nuts.
Options- A. Yes
- B. No Discuss
- 6. A Francis turbine is an outward flow reaction turbine.
Options- A. True
- B. False Discuss
- 7. The negative acceleration is called retardation.
Options- A. True
- B. False Discuss
- 8. When the spring of a watch is wound, it will possess
Options- A. strain energy
- B. kinetic energy
- C. heat energy
- D. electrical energy Discuss
- 9. An alloy of copper, tin and zinc is known as
Options- A. brass
- B. bronze
- C. gun metal
- D. muntz metal Discuss
- 10. In electro-chemical machining, the gap between the tool and work is kept as
Options- A. 0.1 mm
- B. 0.25 mm
- C. 0.4 mm
- D. 0.75 mm Discuss
More questions
Correct Answer: Glass
Correct Answer: 0.577
Correct Answer: lightest
Correct Answer: Yes
Correct Answer: No
Correct Answer: False
Correct Answer: True
Correct Answer: strain energy
Correct Answer: gun metal
Correct Answer: 0.75 mm
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