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- Question
The energy that generates wind comes from what source?
Options- A. Anemometers
- B. Solar radiation
- C. Ocean currents
- D. None of the above
- Correct Answer
- Solar radiation
ExplanationWind is nothing but the form of moving air. It is caused by the uneven heating of the earth's surface by the sun. Hence, the energy that generates wind comes from solar radiation.
- 1. The unit of energy in MKS system is
Options- A. Joule
- B. Ohm
- C. Erg
- D. Volt Discuss
- 2. Circuit breaker usually operate under
Options- A. after D. C. component has ceased
- B. transient state of short-circuit current
- C. sub-transient state of short-circuit current
- D. steady state of short-circuit current Discuss
- 3. A manometer is used to measure
Options- A. earthquake
- B. pressure
- C. temperature
- D. density Discuss
- 4. Speed regulation of synchronous motor is
Options- A. 1%
- B. 25%
- C. Zero
- D. 0.5% Discuss
- 5. If velocity is constant then acceleration is what?
Options- A. constant
- B. increasing
- C. 0
- D. infinite Discuss
- 6. Which compressor is usually used in AC?
Options- A. Centrifugal
- B. Rotary
- C. Reciprocating
- D. Axial Discuss
- 7. Which among the following determines the pitch of a sound?
Options- A. Amplitude
- B. Frequency
- C. Loudness
- D. Wavelength Discuss
- 8. What is the SI unit of heat energy?
Options- A. Joule
- B. Newton
- C. Calorie
- D. Kelvin Discuss
- 9. What is the SI unit of Power?
Options- A. Boyle
- B. Watt
- C. Newton
- D. Pascal Discuss
- 10. When light passes from one medium to another, this phenomenon of change in its direction is called _____.
Options- A. Refraction
- B. Diffraction
- C. Propagation
- D. No option is correct Discuss
Physics problems
Search Results
Correct Answer: Joule
Explanation:
The unit of energy in MKS system is Joule.
Correct Answer: transient state of short-circuit current
Correct Answer: pressure
Correct Answer: Zero
Correct Answer: 0
Explanation:
If an object moves with some velocity that means the magnitude and direction of the object changes i.e, the object moves with some acceleration. Hence, if the object moves with constant velocity, no change in direction and magnitude of speed i.e, no acceleration = 0 acceleration.
Correct Answer: Reciprocating
Correct Answer: Frequency
Correct Answer: Joule
Correct Answer: Watt
Correct Answer: Refraction
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