Physics problems
- 1. What type of electromagnetic radiation is used in the remote control of a television?
Options- A. Ultraviolet
- B. Visible
- C. Infrared
- D. None of the above Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: Infrared
- 2. Which among the following temperature scale is based upon absolute zero?
Options- A. Rankine
- B. Celsius
- C. Fahrenheit
- D. Kelvin Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: Kelvin
Explanation:
Kelvin temperature scale is the temperature scale that is based upon absolute zero.
- 3. 1 WH =
Options- A. 360 joules
- B. 36000 joules
- C. 3600 joules
- D. 36 joules Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
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.
- 4. If velocity is constant then acceleration is what?
Options- A. constant
- B. increasing
- C. 0
- D. infinite Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
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.
- 5. Speed regulation of synchronous motor is
Options- A. 1%
- B. 25%
- C. Zero
- D. 0.5% Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: Zero
- 6. A manometer is used to measure
Options- A. earthquake
- B. pressure
- C. temperature
- D. density Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: pressure
- 7. 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 Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: transient state of short-circuit current
- 8. The unit of energy in MKS system is
Options- A. Joule
- B. Ohm
- C. Erg
- D. Volt Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: Joule
Explanation:
The unit of energy in MKS system is Joule.
- 9. The energy that generates wind comes from what source?
Options- A. Anemometers
- B. Solar radiation
- C. Ocean currents
- D. None of the above Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
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.
- 10. Which compressor is usually used in AC?
Options- A. Centrifugal
- B. Rotary
- C. Reciprocating
- D. Axial Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: Reciprocating
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