Electrical Engineering MCQs

Page No. 237

Efficiency of power transfer when maximum transfer of power c xerosis


a100%

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b 80%

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c75%

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d50%

✓


View Answer 50%

The resistance LM will be____________?


a6.66 Q

✓


b 12 Q

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c18Q

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d20Q

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View Answer 6.66 Q

Thevenin resistance Rth is found


aby removing voltage sources along with their internal resistances

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bby short-circuiting the given two terminals

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cbetween any two ‘open’ terminals

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d between same open terminals as for Etk

✓



Kirchhoffs current law is applicable to only


ajunction in a network

✓


bclosed loops in a network

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celectric circuits

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delectronic circuits

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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

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bsuperposition theorem

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creciprocity theorem

✓


dnone of the above

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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

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conly voltage sources are made dead

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dall voltage and current sources are made dead

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


a sources, nodes and meshes

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bsources and nodes

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csources

✓


d nodes

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View Answer sources

In Thevenin’s theorem, to find Z


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

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

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call independent voltage and current sources are short circuited

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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

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b loop

✓


ccircuit

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d junction

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View Answer loop

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


anode

✓


b terminus

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ccombination

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danode

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View Answer node

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