HomeQuizzes & SurveysInstrumentation – Power Generation quiz part 4Instrumentation – Power Generation quiz part 4 Leave a Comment / By Sivaranjith / February 21, 2018 Welcome to your Instrumentation - Power Generation quiz part 4Murray loop test can be used for location of ground fault on a cable short circuit fault on a cable Both A & B None of these Which of the following devices should be used for accurate measurement of low D.C. voltage? Small range moving coil voltmeter D.C. potentiomete Small range thermocouple voltmeter None of the above A voltage of about 200 V can be measured directly by a D.C. potentiometer a D.C. potentiometer in conjunction with a volt ratio box a D.C. potentiometer in conjunction with a known resistance None of the above It is required to measure the true open circuit e.m.f. of a battery. The best device is D.C. voltmeter Ammeter and a known resistance D.C. potentiometer None of the above A direct current can be measured by a D.C. potentiometer directly a D.C. potentiometer in conjunction with a standard resistance a D.C. potentiometer in conjunction with a volt ratio box none of the above To measure a resistance with the help of a potentiometer it is necessary to standardise the potentiometer not necessary to standardise the potentiometer necessary to use a volt ratio box in conjunction with the potentiometer none of the above A phase shifting transformer is used in conjunction with D.C. potentiometer Drysdale potentiometer A.C. co-ordinate potentiometer Crompton potentiometer Basically, a potentiometer is a device for comparing two voltages measuring a current comparing two currents  In order to achieve high accuracy, the slide wire of a potentiometer should be as long as possible as short as possible neither too small not too large very thick To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken from a source which is not the same as the unknown voltag from a battery from the same source as the unknown voltage any of the above Time's up Share your love Facebook Twitter Pinterest Linkedin
