WIREMAN MULTIPLE CHOICE QUESTIONS (MCQ)

WIREMAN MULTIPLE CHOICE QUESTIONS                                  (MCQ)
The type of switch used in Staircase wiring is............
(a) Rotary Switch
(b) Push Button
(c) Two Way Switch
(d) One Way Switch
Answer : (c) Two Way Switch

When the core becomes magnetically saturated,
the increase in magnetic field strength H
(a) Enhances B drastically
(b) Decreases the permeability of the core
(c) Increases the permeability of the core
(d) Almost has no effect on magnetic induction B.
Answer : (d) Almost has no effect on magnetic induction B.

The nominal voltage of Lead-acid cell in an open
circuit is approximately…….
(a) 2 Volts
(b) 1.5 Volts
(c) 1,25 Volts
(d) 2.5 Volts
Answer : (a) 2 Volts

While selecting a fixed value resistor, its main
specifications to be considered are....
(a) Voltage, wattage and tolerance in percents.
(b) Voltage, Current and Size
(c) Value in Ohms, Voltage and size
(d) Value in Ohms, Wattage and tolerance of its value
Answer : (d) Value in Ohms, Wattage and
                       tolerance of its value
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The specific gravity of a Lead-acid battery's
electrolyte is measured by
(a) Hydrometer
(b) Barometer
(c) Hygrometer
(d) Pyrometer
Answer : (a) Hydrometer

Power factor of a pure resistive circuit is.................
(a) Zero
(b) Lagging
(c) Leading
(d) Unity
Answer : (d) Unity

The function of the choke coil in fluorescent
lamp circuit is.......
(a) Only to limit the operating current
(b) Only to produce starting voltage impulse
(c) To produce starting voltage impulse and to
      limit the operating current *
(d) To limit the heating cuitent of filaments
Answer : (c) To produce starting voltage impulse
                      and to limit the operating current
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AC mains supply in India has the frequency of..........
(a) 100 Hz
(b) 60Hz
(c) 50 Hz
(d) 40Hz
Answer : (c) 50 Hz

The fixed value Carbon Resistors are generally
not more than......Watts.
(a) 10
(b) 6
(c) 4
(d) 2
Answer : (d) 2

In an Inductive AC circuit, current.,
(a) Lags behind the voltage by 180°
(b) Leads the Voltage by 90u
(c) Lags behind the Voltage by 90°
(d) Is in phase with the Voltage
Answer : (c) Lags behind the Voltage by 90°