Basic Electricity MCQ

1. The draft velocity of electrons is
A. Larger then the speed of light
B. Almost equal to the speed of light
C. Equal to the speed of light
D. Very small in comparison to the speed of light 

2. Ohm’s law applicable to
A. Temperature is reduced
B. Temperature is increased
C. Number of free electrons available become less
D. Number of free electrons available become more

3. A network having one or more than one source of emf is called
A. Passive network
B. Active network
C. Linear network
D. Non-linear network

4. Energy Meter for connection has
A. 2 terminals
B. 4 terminals
C. 6 terminals
D. 8 terminals

5. Kirchhoff’s laws are not applicable to circuit with
A. Distributed parameters
B. Lumped parameters
C. Passive elements
D. Non-linear resistance

6. Kirchhoff’s  current law is applicable only to
A. Electric circuits
B. Electronics circuits
C. Junction in a network
D. Closed-loop in a network

7. The fuse rating is always expressed in
A. Volts
B. Amperes
C. Ampere-volts
D. Ampere hours

8. An electric battery is a device that
A. Generate the emf by chemical action
B. Convert the heat energy into electrical energy
C. Convert mechanical energy into electrical energy
D. Convert fuel energy into electrical

9. Cell are connected in parallel in order to increase the
A. Life of the cell
B. Efficiency
C. Current capacity
D. Voltage rating

10. Cell are connected in series in order to increase the
A. Life of the cell
B. Terminal voltage
C. Current capacity
D. Voltage rating

11. In Fleming’s left-hand rule thumb always represents direction of
A. Current flow
B. Magnetic field
C. Mechanical force
D. Induced EMF

12. The capacity of a lead-acid battery does not depend upon
A. Charge rate
B. Discharge rate
C. Temperature
D. Density of electrolyte

13. In Fleming’s left-hand rule thumb always represents direction of
A. Remains constant
B. Varies
C. Decreases
D. Increases

14. Lamps in street lighting are all connected in
A. Series
B. Parallel
C. Series-parallel
D. End-to-end

15. Which of the following statements associated with inductors is wrong?
A. An inductor is a sort of short circuit to DC
B. An inductor is a sort of the open circuit to DC
C. An inductor never dissipates energy but only store it
D. A finite amount of energy can be stored in inductors even if voltages across it is zero,
  such as when the current through it is constant.


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