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- Question
After removing two electrons from helium atom it become?
Options- A. UV rays
- B. Alpha particle
- C. Gama particle
- D. X rays
- Correct Answer
- Alpha particle
- 1. If an object moves with constant velocity,
Options- A. it must have constant speed
- B. it must have constant direction
- C. it must have constant speed in constant direction
- D. None of the above Discuss
- 2. The light of distant stars is affected by
Options- A. Interstellar Dust
- B. The Earth's Atmosphere
- C. Both A & B
- D. None of the above Discuss
- 3. The size of gear is usually specified by
Options- A. pitch circle diameter
- B. diametral pitch
- C. pressure angle
- D. circular pitch Discuss
- 4. Exerts a force on anything that has an electric charge
Options- A. Electric field
- B. Electrostatic force
- C. Inductive field
- D. All of the above Discuss
- 5. The primary agent of contact metamorphism is
Options- A. Temperature
- B. Pressure
- C. Weathering
- D. Flowing water Discuss
- 6. A fixture is defined as a device which
Options- A. is used to check the accuracy of workpiece
- B. holds and locates a workpiece and guides and controls one or more cutting tools
- C. holds and locates a workpiece during an inspection or for a manufacturing operation
- D. All of the above Discuss
- 7. Which sources produce alternating current (AC)?
Options- A. Solar power plants
- B. Hydro-electric generators
- C. Batteries
- D. All of the above Discuss
- 8. Gear Lapping is an operation
Options- A. for gear reconditioning
- B. prior to heat treatment
- C. after heat treatment
- D. None of the above Discuss
- 9. One billionth of a second is called
Options- A. microsecond
- B. picoseconds
- C. millisecond
- D. nanosecond Discuss
- That is, 1/1,000,000,000 of a second, or 10^?9 seconds.
- 10. The least penetrating power ray is
Options- A. Gamma rays
- B. Beta rays
- C. Alpha rays
- D. None of the above Discuss
Physics problems
Search Results
Correct Answer: it must have constant speed in constant direction
Correct Answer: Both A & B
Correct Answer: pitch circle diameter
Explanation:
The size of gear is usually specified by pitch circle diameter.
Correct Answer: Electric field
Correct Answer: Temperature
Explanation:
The primary agent of contact metamorphism is heat or temperature.
Correct Answer: holds and locates a workpiece and guides and controls one or more cutting tools
Correct Answer: Hydro-electric generators
Explanation:
Alternating Current (AC) is the current in which flow of current is altered periodically whereas in DC current i.e, direct current the flow of current is only in one direction.
Some of the sources of AC current are :
1. Hydro-electric generators
2. Thermal power generators
3. Nuclear power generators...
Correct Answer: after heat treatment
Correct Answer: nanosecond
Explanation:
A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second or one billionth of a second.
Correct Answer: Alpha rays
Explanation:
The least penetrating power ray is Alpha rays.
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