Only an electrical engineer can score full marks in this quiz?

Only an electrical engineer can score full marks in this quiz

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   Author : Adiyogi Quiz Master

Q1: Which one among the following is the correct order of power consumption for light of equal intensity?

  • A. CFL tube < Fluorescent tube < Incandescent bulb < Light emitting diode
  • B. Light emitting diode < CFL tube < Fluorescent tube < Incandescent bulb
  • C. CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb
  • D. Incandescent bulb < Light emitting diode < Fluorescent tube < CFL tube

Q2: In India, distribution of electricity for domestic purpose is done in the form of

  • A. 220 V; 50 Hz
  • B. 110 V; 60 Hz
  • C. 220 V; 60 Hz
  • D. 110 V; 50 Hz

Q3: When an electrical safety fuse is rated (marked) as 16 A, it means it

  • A. will not work if current is less than 16 A
  • B. has a resistance of 16 ?
  • C. will work if the temperature is more than 16?C
  • D. will be blown (break) if current exceeds 16 A

Q4: The main power supply in India is at 220 V, whereas that in the US is at 110 V. Which one among the following statements in this regard is correct?

  • A. 110 V is safer but more expensive to maintain
  • B. 110 V is safer and cheaper to maintain
  • C. 110 V leads to lower power loss
  • D. 110 V works better at higher latitudes

Q5: Kilowatt-hour is the unit of

  • A. potential difference
  • B. electric power
  • C. electric energy
  • D. electric potential

Q6: The material used for electric fuse is an alloy of tin and lead. This alloy should have

  • A. high specific resistance and low melting point
  • B. low specific resistance and high melting point
  • C. low specific resistance and low melting point
  • D. high specific resistance and high melting point

Q7: If two conducting spheres are separately charged and then brought in contact:

  • A. the total energy of the two spheres is conserved
  • B. the total charge on the spheres is conserved
  • C. both the total energy and charge are conserved
  • D. the final potential is always the mean of the original potential of the two spheres

Q8: Two pieces of metallic wire having equal length and equal volume placed in air have different resistances. The two wires must:

  • A. have different cross sections
  • B. have different temperatures
  • C. be of different materials
  • D. be of same density

Q9: If a heater coil is cut into two equal parts and only one part is used in the heater, the heat generated will be:

  • A. doubled
  • B. four times
  • C. one-fourth
  • D. halved

Q10: A hollow metal ball carrying an electric charge produces no electric field at points:

  • A. outside the sphere
  • B. on its surface
  • C. inside the sphere
  • D. only at the centre