1. Electrical instruments are broadly divided into:
(A) Five types
(B) Three types
(C) Four types
(D) Two types
2. Absolute instruments are mainly used in:
(A) Houses
(B) Industries
(C) Vehicles
(D) Standard laboratories
3. Secondary instruments give:
(A) Indirect reading
(B) No reading
(C) Calculated reading
(D) Direct reading
4. Which of the following is an example of absolute instrument?
(A) Ammeter
(B) Voltmeter
(C) Tangent galvanometer
(D) Wattmeter
5. Which instrument needs calibration?
(A) Secondary instrument
(B) Absolute instrument
(C) Digital instrument
(D) None
6. Indicating instruments show:
(A) Stored value
(B) Average value
(C) Instantaneous value
(D) Total value
7. Recording instruments provide:
(A) Continuous record
(B) No value
(C) Instant value only
(D) Calculated value
8. Integrating instruments measure:
(A) Total energy over time
(B) Current
(C) Voltage
(D) Resistance
9. Example of integrating instrument is:
(A) Voltmeter
(B) Ammeter
(C) Energy meter
(D) Frequency meter
10. Digital instruments have:
(A) Moving parts
(B) No moving parts
(C) Heavy parts
(D) Magnetic parts
11. Analogue instruments are:
(A) Less accurate
(B) More accurate
(C) Digital
(D) Automatic
12. Which instrument is more accurate?
(A) Analogue
(B) None
(C) Both same
(D) Digital
13. Magnetic effect of current is used in:
(A) Few instruments
(B) Only digital instruments
(C) No instruments
(D) Most instruments
14. Heating effect of current depends on:
(A) V²
(B) IR
(C) I²R
(D) R²
15. Electrostatic instruments are used for:
(A) High voltage
(B) Low voltage
(C) Current
(D) Power
16. Deflecting force is used to:
(A) Stop motion
(B) Increase resistance
(C) Reduce error
(D) Move pointer
17. Controlling force acts:
(A) Same direction as deflecting
(B) Opposite to deflecting
(C) No direction
(D) Randomly
18. Damping force is used to:
(A) Reduce oscillations
(B) Increase speed
(C) Increase current
(D) Reduce voltage
19. Which damping method is most efficient?
(A) Air friction
(B) Eddy current
(C) Fluid friction
(D) Gravity
20. Tangent galvanometer works on:
(A) Tangent law
(B) Faraday law
(C) Ohm’s law
(D) Kirchhoff law