Electrical Circuits Objective Questions Answers

1. A terminal where more than two branches met is called:

a) Node

b) Terminus

c) Loop

d) None of the above

A

2. If there are 'b' branches and 'n' nodes the number of equations will be:

a) n-1

b) b

c) b-n-1

d) b-n+1

D

3. Kirchhoff's laws are applicable to circuits with:

a) Distributed parameters

b) Lumped parameters

c) Passive elements

d) Non-linear resistances

A

4. An ideal current source has:

a) Zero internal conductance

b) Zero internal resistance

c) Zero voltage on no load

d) Zero ripple

A

5. For maximum transfer of power, internal resistance of the source should be:

a) Equal to load resistance

b) Less than that of the load

c) More than that of the load

d) Zero

A

6. The superposition theorem requires as many circuits to be solved as there are:

a) Nodes

b) Sources

c) Nodes and Sources

d) Nodes, Sources and Mesh

B

7. Which of the following is correct:

a) Norton's equivalent resistance is the same as Thevenin's equivalent resistance

b) Norton's equivalent is the current equivalent of the network

c) The load is connected in parallel to the Norton's equivalent resistance and Norton's equivalent current source

d) All the above

D

8. Maxwell's circulating current theorem:

a) Utilizes Kirchhoff's voltage law

b) Utilizes Kirchhoff's current law

c) Is a network reduction method

d) Is confined to single loop circuits

A

9.An ideal voltage source should have:

a) Zero source resistance

b) Infinite source resistance

c) Terminal voltage is proportional to current

d) Open-circuit voltage nearly equal to voltage of the load current

A

10. The electrical energy required to raise the temperature of a give amount of water is 200kwh. If the heat losses are 20%. Total energy required is:

a) 250 kwh

b) 240 kwh

c) 160 kwh

d) None of the above

A