DC Motor MCQ Questions Answers Electrical Engineering (Direct Current)
Direct Current (DC) circuits play a fundamental role in electronics and electrical engineering. They form the building blocks for many complex systems, from simple battery-powered devices to advanced electronic circuits. To help you better understand the principles of DC circuits, we’ve compiled a set of multiple-choice questions (MCQs) along with their answers. Test your knowledge and enhance your grasp of DC circuits with this informative article.
1) A d.c circuit usually has ___________ as the load.
a) resistance
b) inductance
c) capacitance
d) both inductance and capacitance
2) An external resistance R is connected to a cell of internal resistance r. The maximum current flows in the external resistance when
a) R>r
b) R >r
c) R=r
d) any other value of R
3) Given three equal resistances. How many combinations of these three resistances can be made?
a)three
b) four
c) five
d) two
4) Kirchhoff’s voltage law deals with
a) conservation of energy
b) conservation of charge
c) conservation of momentum
d) conservation of angular momentum
5) An ordinary dry cell can deliver a current of about
a) 3 A
b) 2 A
c) 1/8 A
d) none of the above
6) For the circuit shown in Fig. 2.63, the power dissipated in G1 is
a) 50 mW
b) 25 mW
c) 100 mW
d) 125 mW
7) The power dissipated in a resistor in terms of its conductance G and current I through it is
a) I2G
b) I2/G
c) G2/I
d) none of the above
8) The total conductance of two 0.1 conductances in series is
a) 0.5 S
b) 0.2 S
c) 1 S
d) 0.05 S
9) Conductance can be
a) positive only
b) negative only
c) positive or negative
d) information incomplete
10) A charge of 10mC flows through a cross section 2.5 mm2 normally in 2 seconds. The current is
a) 25 mA
b) 5 mA
c) 20mA
d) 4Ma