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Question Detail
Which instrument is used to measure the power of electric circuit ?
- Voltmeter
- Wattmeter
- Wavemeter
- Viscometer
Answer: Option B
Explanation:
Voltmeter - is used to measure electric potential difference between two points,
Wavemeter - is used to measure the wavelength of a radiowave,
Viscometer - is used measure viscosity of liquid.
1. Device used to measure potential difference between two points in a circuit is ?
- Ammeter
- Galvanometer
- Voltmeter
- None of above
Answer: Option C
2. Radian is used to measure
- Temperature
- Intensity of Flame
- Angle
- Solid Angle
Answer: Option C
Explanation:
Kelvin is used to measure Temperature,
Candela is used to measure Intensity of flame,
Steredian is used to measure Solid Angle.
3. Which instrument is used to measure pressure of gases ?
- Manometer
- Machmeter
- Magnetometer
- Micrometer
Answer: Option A
Explanation:
Machmeter - is used to determine the speed of an aircraft in terms of speed of sound,
Magnetometer - is used to compare magnetic movements and fields,
Micrometer - is used to convert sound waves into electrical vibrations.
4. Which instrument is used to measure heat radiation ?
- Radar
- Salinometer
- Refractometer
- Radio micrometer
Answer: Option D
Explanation:
Radar - is used to detect the direction and speed of an object by means of radiowaves,
Salinometer - is used to determine salinity of solutions,
Refractometer - is used to measure refractive indices.
5. Which instrument is used to measure sound under water ?
- Hygrometer
- Hygroscope
- Hypsometer
- Hydrophone
Answer: Option D
Explanation:
Hygrometer - is used to measure level of humidity,
Hygroscope - shows the changes in atmospheric humidity,
Hypsometer - is used to determine the boiling points of liquids.
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