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- Question
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
- Correct Answer
- transient state of short-circuit current
- 1. A manometer is used to measure
Options- A. earthquake
- B. pressure
- C. temperature
- D. density Discuss
- 2. Speed regulation of synchronous motor is
Options- A. 1%
- B. 25%
- C. Zero
- D. 0.5% Discuss
- 3. If velocity is constant then acceleration is what?
Options- A. constant
- B. increasing
- C. 0
- D. infinite Discuss
- 4. 1 WH =
Options- A. 360 joules
- B. 36000 joules
- C. 3600 joules
- D. 36 joules Discuss
- 5. Which among the following temperature scale is based upon absolute zero?
Options- A. Rankine
- B. Celsius
- C. Fahrenheit
- D. Kelvin Discuss
- 6. The unit of energy in MKS system is
Options- A. Joule
- B. Ohm
- C. Erg
- D. Volt Discuss
- 7. The energy that generates wind comes from what source?
Options- A. Anemometers
- B. Solar radiation
- C. Ocean currents
- D. None of the above Discuss
- 8. Which compressor is usually used in AC?
Options- A. Centrifugal
- B. Rotary
- C. Reciprocating
- D. Axial Discuss
- 9. Which among the following determines the pitch of a sound?
Options- A. Amplitude
- B. Frequency
- C. Loudness
- D. Wavelength Discuss
- 10. What is the SI unit of heat energy?
Options- A. Joule
- B. Newton
- C. Calorie
- D. Kelvin Discuss
Physics problems
Search Results
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: 3600 joules
Explanation:
The watt-hour (WH) is a unit of energy equivalent to one watt (1 W) of power expended for one hour (1 h) of time.
1 WH = 3600 joules.
Correct Answer: Kelvin
Explanation:
Kelvin temperature scale is the temperature scale that is based upon absolute zero.
Correct Answer: Joule
Explanation:
The unit of energy in MKS system is Joule.
Correct Answer: Solar radiation
Explanation:
Wind 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.
Correct Answer: Reciprocating
Correct Answer: Frequency
Correct Answer: Joule
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