Units Devices Dimensions And Measurements Quiz 1 (20 MCQs)

Quiz Instructions

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1. The SI unit of "pressure" is

Correct Answer: D) Pascal.

2. Which instrument is used to determine rotational speed of a shaft (used in aeroplanes and motor boats)?

Correct Answer: C) Tachometer.

3. Which instrument is used to measure frequency of electromagnetic waves?

Correct Answer: B) Ondometer.

4. Newton is used to measure

Correct Answer: B) Force.

5. One Astronomical unit is the average distance between

Correct Answer: B) Earth and the Sun.

6. Which instrument is used to view rapidly moving objects?

Correct Answer: C) Stroboscope.

7. What is unit of Astronomical distance?

Correct Answer: A) Light year.

8. Which instrument is used to measures force and velocity of wind and directions?

Correct Answer: D) Anemometer.

9. In a 'dynamo',

Correct Answer: C) Mechanical energy is converted to electrical energy.

10. Unit of Power

Correct Answer: A) Watt.

11. Radian is used to measure

Correct Answer: A) Angle.

12. Which instrument is used to determine the speed of an aircraft in terms of speed of sound?

Correct Answer: A) Machmeter.

13. Which instrument is used to determine salinity of solutions?

Correct Answer: B) Salinometer.

14. What is unit of Electric Resistance?

Correct Answer: A) Ohm.

15. A thermostat is a device for

Correct Answer: B) Regulating temperature.

16. The damage of the human body due to radiation (X-rays or $\gamma$-rays etc,) is measured in

Correct Answer: A) Rads.

17. Which instrument is used to detect the direction and speed of an object by means of radiowaves?

Correct Answer: A) Radar.

18. Which instrument is used to measure pressure of gases?

Correct Answer: B) Machmeter.

19. Which instrument is used in submarine to see the objects above sea level?

Correct Answer: A) Periscope.

20. What is unit of Specific Heat capacity?

Correct Answer: B) Joule per kilogram per Kelvin.