Electrical Engineering MCQs

Page No. 237

Efficiency of power transfer when maximum transfer of power c xerosis


a100%


b 80%


c75%


d50%


View Answer 50%

The resistance LM will be____________?


a6.66 Q


b 12 Q


c18Q


d20Q


View Answer 6.66 Q

Thevenin resistance Rth is found


aby removing voltage sources along with their internal resistances


bby short-circuiting the given two terminals


cbetween any two ‘open’ terminals


d between same open terminals as for Etk



Kirchhoffs current law is applicable to only


ajunction in a network


bclosed loops in a network


celectric circuits


delectronic circuits


View Answer junction in a network

“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”.


acompensation theorem


bsuperposition theorem


creciprocity theorem


dnone of the above


View Answer reciprocity theorem

While calculating Rth in Thevenin’s theorem and Norton equivalent


a. all independent sources are made dead


bonly current sources are made dead


conly voltage sources are made dead


dall voltage and current sources are made dead



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


a sources, nodes and meshes


bsources and nodes


csources


d nodes


View Answer sources

In Thevenin’s theorem, to find Z


aall independent current sources are short circuited and independent voltage sources are open circuited


ball independent voltage sources are open circuited and all independent current sources are short circuited


call independent voltage and current sources are short circuited


dall independent voltage sources are short circuited and all independent current sources are open circuited



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


a branch


b loop


ccircuit


d junction


View Answer loop

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


anode


b terminus


ccombination


danode


View Answer node

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