⚡Electrical Engineering MCQs
Electrical Engineering MCQs
499 MCQs431
For long distance transmission the transformer used is_____________?
AStep down
BInput voltage and output voltage remain same
CStep up
DAmplifier is used
432
Lagging of changes in the magnetization of a substance behind changes in the magnetic field as the magnetic field is varied is known as magnetic_____________?
ARetaintivity
BPermeability
CFlux
DHysteresis
433
When the motor is at its maximum speed then back emf will be______________?
AMaximum
BZero
CIntermediate values
DNo back emf
434
Transformer works on the principle of________________?
ALenzs law
BFaradays law
CMutual induction
DLaw of conservation of power
435
An electric current induced within the body of a conductor when that conductor either moves through a non uniform magnetic field or in a region where there is a change in magnetic flux is called_____________?
AInduced current
BEddy current
CBack emf
DNone of the above
436
The out put voltage of a transformer is 3 times the input voltage then turns ratio will be________________?
A3-Jan
B3
C1
D6
437
Long distance transmission is easy for________________?
AC voltage
BA.C voltage
CHalf
DC voltage
438
Magnetic compass needle will be deflecting if it is kept near________________?
AStatic charge
BSoft iron
CSemi-conductor
DAccelerating charge
439
A.C can not be used for_______________?
Aproducing heat
Bproducing light
CMagnetizing iron
DProducing magnetic field
440
A small coil lies inside a large coil. The two coils are horizontal concentric and carry currents in opposite directions. The large coil will experience______________?
AA torque about horizontal axis
BA torque about vertical axis
CAn upward force along the axis
DNo resultant force