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Elements of Electrical Engineering
(2110005)
Summer 2016 Sem-2
MCQ(s) of
Elements of Electrical Engineering
(2110005)
- Summer 2016 Sem-2
Q.
1
The unit of current is__________________.
(A) Volt/sec
(B) coulomb/sec
(C) amp/sec
(D) none of these
Answer
(B)
coulomb/sec
Q.
2
Coulomb’s second law is called as ________law.
(A) Inverse square
(B) charge
(C) induction
(D) none of these
Answer
(A)
Inverse square
Q.
3
If the length of conductor is doubled and its cross sectional area is reduced to 50% then its resistance will be_______________.
(A) Same
(B) doubled
(C) increased by 4 times
(D) reduced to 1/4th
Answer
(C)
increased by 4 times
Q.
4
A conductor carries 10A in a direction perpendicular to a magnetic field of density 0.3T. If the length of conductor is 10 cm the force on the conductor F=_________________.
(A) 3 N
(B) 0.3 N
(C) 30 N
Answer
(B)
0.3 N
Q.
5
Amount of light produced by a lamp or the amount of heat produced by an iron is proportional to the ______________.
(A) Square of RMS value
(B) RMS value
(C) square of average value
(D) average value
Answer
(B)
RMS value
Q.
6
The three phase voltages are displaced by ____________ radians from each other
(A)
$\mathrm{\pi}$
/2
(B)
$\mathrm{\pi}$
/3
(C) 2
$\mathrm{\pi}$
/3
(D)
$\mathrm{\pi}$
Answer
(C)
2
$\mathrm{\pi}$
/3
Q.
7
The resistance of a thin conductor is ______ as compared to that of a thick conductor.
(A) Same
(B) lower
(C) higher
Answer
(C)
higher
Q.
8
A magnetic circuit has mean length of 20 cm and cross sectional area of 1 cm
^{2}
if the flux density is 2T then Φ=______________.
(A) 2×10
^{-4}
mWb
(B) 2×10
^{-4}
Wb
(C) 2×10
^{-2}
Wb
(D) none of these
Answer
(A)
2×10
^{-4}
mWb
Q.
9
For a balanced delta load the____________ of all their line currents is zero.
(A) Product
(B) difference
(C) sum
(D) division
Answer
(C)
sum