⚡Electrical Engineering MCQs
Electrical Engineering MCQs
499 MCQs101
In which of the following applications variable speed operation is preferred ?
AExhaust fan
BCeiling fan
CRefrigerator
DWater pump
102
_______________has the least value of starting torque to full load torque ratio?
AD.
BD.
CSquirrel cage induction motor
DSlip ring induction motor
103
Battery operated scooter for braking uses__________________?
Aplugging
Bmechanical braking
Cregenerative braking
Drheostatic braking
104
Which of the following machines has heavy fluctuation of load ?
APrinting machine
BPunching machine
CPlaner
DLathe
105
________________ motor is a constant speed motor?
ASynchronous motor
BSchrage motor
CInduction motor
DUniversal motor
106
The starting torque of a D.C. motor is independent of which of the following?
AFlux
BArmature current
CFlux and armature current
DSpeed
107
need frequent starting and stopping of electric motors ?
APaper mills
BGrinding mills
CAir-conditioners
DLifts and hoists
108
Which of the following motors are best for the rolling mills ?
ASingle phase motors
BSquirrel cage induction motors
Cmotors
DD.
109
Which of the following motors is preferred when smooth and precise speed control over a wide range is desired ?
AD.
BSquirrel cage induction motor
CWound rotor induction motor
DSynchronous motor
110
Which of the following motors is preferred for boom hoist of a travelling crane ?
ASingle phase motor
BSynchronous motor
Cslip ring motor
DC. shunt motor