Electrical Engineering MCQs

Page No. 55

Which of the following is the definition of proportional band of a controller ?


a. The range of air output as measured variable varies from maximum to minimum


b The range of measured variables from set value


cThe range of measured variables through which the air output changes from maximum to minimum


dThe range of measured variables through which the air output changes from maximum to minimum



Which of the following devices is used for conversion of co-ordinates ?


aMicrosyn


b Selsyn


c Synchro-resolver


dSynchro-transformer


View Answer Synchro-resolver

A phase lag lead network introduces in the output_______________?


a lag at all frequencies


blag at high frequencies and lead at low frequencies


clag at low frequencies and lead at high frequencies


d none of the above



When the initial conditions of a system are specified to be zero it implies that the system is________________?


aat rest without any energy stored in it


bworking normally with reference input


cworking normally with zero reference input


dat rest but stores energy



A differentiator is usually not a part of a control system because it______________?


areduces damping


b. reduces the gain margin


cincreases input noise


d increases error


View Answer increases input noise

In a control system integral error compensation _________________ steady state error?


aincreases


bminimizes


cdoes not have any effect on


dany of the above


View Answer minimizes

An amplidyne can give which of the following characteristics ?


aConstant current


bConstant voltage


cConstant current as well as constant voltage


dConstant current, constant voltage and constant power



________________directly converts temperature into voltage?


aThermocouple


bPotentiometer


cGear train


d LVDT


View Answer Thermocouple

Which of the following is exhibited by Root locus diagrams ?


aThe poles of the transfer function for a set of parameter values


bThe bandwidth of the system


cThe response of a system to a step input


dThe frequency response of a system



Which of the following is the output of a thermocouple ?


aAlternating current


bDirect current


cA.C. voltage


dD.C. voltage


View Answer D.C. voltage

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