Basic electrical MCQ #5
1) An electric current is the ______.
(a) opposition
to electrons.
(b) flow of electrons.
(c) storage of charge.
(d) ionisation of atom.
2) The frequency
of direct current (DC) is ______.
(a) zero.
(b) 50 Hz.
(c) unity.
(d) infinity.
3) The number
of cycle per second is called as ______.
(a) time period.
(b) frequency.
(c) angular displacement.
(d) angular velocity.
4) Reciprocal
of the conductance is called
(a) resistance.
(b) admittance.
(c) reluctance.
(d) reactance.
5) Which of
the following is not a passive component?
(a) Inductor.
(b) Resistor.
(c) Capacitor.
(d) None of the above.
ANSWER: | 1-b | 2-a | 3-b | 4-a | 5-d |
6) In voltaic cell, anode and
cathode of the cell is
(a) copper electrode,
zincb.
(b) zinc, copperc.
(c) aluminium, zincd.
(d) nickel, cobalt
7) What is the function of insulation
on a current carrying conductor?
(a) to prevent shock.
(b) to prevent leakage of current.
(c) both of above factors.
(d) none of above factors.
8) Ohm’s law
is not applicable to
(a) linear circuits.
(b) high voltage circuits.
(c) carbon resistors.
(d) vacuum tubes.
9) Lenz’s law
is a consequence of the law of coservation of
(a) energy.
(b) charge.
(c) mass.
(d) momentum.
10) The unit
for permeability of free space is?
(a) Henry
(b) Henry-m
(c) Henry/m
(d) Henry/m2
ANSWER: | 6-a | 7-c | 8-d | 9-a | 10-c |
11) The unit
of reluctance is?
(a) AWb
(b) A2/Wb
(c) Wb/A
(d) A/Wb
12) As the
magnetic flux density increases, the reluctance _____________
(a) Decreases
(b) Increases
(c) Becomes zero
(d) Remains the same
13) The
equivalent of the current (I) in magnetic ohm’s law is?
(a) MMF
(b) Reluctance
(c) Flux
(d) Resistance
14) The B-H
characteristics can be determined using _______
(a) Flux meter
(b) Ammeter
(c) Voltmeter
(d) Multimeter
15) In case
of Inductive circuit, Frequency is ______________ to the inductance.
(a) Much greater than
(b) Inversely proportional
(c) Unrelated
(d) Directly proportional
ANSWER: | 11-d | 12-a | 13-c | 14-a |
15-d |
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