Basic Electrical Questions and Answers

06. A magnet is able to attract

  1. Iron, aluminium and brass
  2. Iron, copper and nickel
  3. Iron, cobalt and zinc
  4. Nickel ,cobalt and steel
Nickel ,cobalt and steel

07. The hydrometer reading on full charged battery should be

  1. 1280
  2. 1160
  3. 1200
  4. 1780
1280

8. Energy meter is a / an

  1. Indicating instrument
  2. Integrating instrument
  3. Good instrument
  4. None of the above
Integrating instrument

09. When three resistances are connected in series, the total resistance of the circuit will be

  1. R1 × R2 × R3 = R
  2. R1 + R2 ­ R3 = R
  3. R1 ­ R2 ­ R3 = R
  4. R1 + R2 + R3 = R
R1 + R2 + R3 = R

10. Water is used only for cooling purposes in a

  1. Thermal power station
  2. Hydraulic power station
  3. Nuclear power station
  4. Diesel power station
Diesel power station

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