Electrical Engineering Mcqs Practice Test

Question 1

“In any network containing more than one sources of e.m.f. the current in any branch is the algebraic sum of a number of individual fictitious currents (the number being equal to the number of sources of e.m.f.), each of which is due to separate action of each source of e.m.f., taken in order, when the remaining sources of e.m.f. are replaced by conductors, the resistances of which are equal to the internal resistances of the respective sources”. The above statement is associated with:

Accepted Answer

C.  Superposition theorem

Question 2

A passive network is one which contains____________?

Accepted Answer

D.  no source of e.m.f. in it

Question 3

Which of the following is the passive element?

Accepted Answer

A.  Capacitance

Question 4

A star circuit has element of resistance R/2. The equivalent delta elements will be_____________?

Accepted Answer

B.  fi?

Question 5

The number of independent equations to solve a network is equal to_____________?

Accepted Answer

A.  the number of chords

Question 6

Millman’s theorem yields____________?

Accepted Answer

D.  equivalent voltage or current source

Question 7

A network which contains one or more than one source of e.m.f. is known as___________?

Accepted Answer

D.  active network

Question 8

The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as___________?

Accepted Answer

A.  non-linear circuit

Question 9

For maximum transfer of power, internal resistance of the source should be_____________?

Accepted Answer

A.  equal to load resistance

Question 10

Efficiency of power transfer when maximum transfer of power c xerosis

Accepted Answer

D.  50%

Question 11

The resistance LM will be____________?

Accepted Answer

A.  6.66 Q

Question 12

Thevenin resistance Rth is found

Accepted Answer

D.  between same open terminals as for Etk

Question 13

Kirchhoffs current law is applicable to only

Accepted Answer

A.  junction in a network

Question 14

“In any linear bilateral network, if a source of e.m.f. E in any branch produces a current I in any other branch, then same e.m.f. acting in the second branch would produce the same current / in the first branch”.

Accepted Answer

C.  reciprocity theorem

Question 15

While calculating Rth in Thevenin’s theorem and Norton equivalent

Accepted Answer

A.  all independent sources are made dead

Question 16

The superposition theorem requires as many circuits to be solved as there are____________?

Accepted Answer

C.  sources

Question 17

In Thevenin’s theorem, to find Z

Accepted Answer

D.  all independent voltage sources are short circuited and all independent current sources are open circuited

Question 18

A closed path made by several branches of the network is known as____________?

Accepted Answer

B.  loop

Question 19

A terminal where three on more branches meet is known as______________?

Accepted Answer

A.  node

Question 20

A non-linear network does not satisfy__________?

Accepted Answer

C.  both homogeneity as well as superposition condition