eleCapsule 27,28

Capsule 27____________

Let's test your self

Q1-Series motor runs on

DC supply only

single phase supply only

both AC &DC supply

both single phase & three phase supply

Q2-The power factor of an ac supply can be determined by

R/Z

XL/R

Z/R

R/XL

Q3-The highest AC transmission voltage in india is

132kv

400kv

900kv

750kv

Q4- The purpose of choke in a fluorescent is to

increase the brightness of the tube

reduce the flicker

increase the starting current

increase the voltage momentarily

Q5-"danger 440 V" plates are

informal notices

caution notices

advisory notice

danger notice

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Capsule 28____________

Let's test your self

Q1- What is the voltage across the diode in the figure

Zero volt

0.7 V

5 V

8 V

Q2- Semiconductors are __________ temperature co-

        efficient.

zero

positive

negative

non-variable

Q3- The resistance of a short-circuit path is

infinite

zero ohm

high

none of the above

Q4- The rating of fuse is expressed in terms of

ampere

volt

VAR

KVA

Q5- Which instrument has the lowest resistance

megger

voltmeter

tachometer

ammeter

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