Related Questions

When a current carrying conductor is brought into magnetic field, the force that moves the conductor depends upon
A The value of current
B The weight of the conductor
C The direction of the conductor
D None of the above
The thickness of insulation provided on the conductor depends on
A The magnitude of voltage on the conductor
B The magnitude of current flowing through it
C Both (A) and (B)
D None of the above
The line insulation is the insulation level of the station equipment.
A less than
B same as
C more than
D proportional to
E not directly related with
The insulation between windings and grounded core and the insulation between the windings of the same phase is
A minor insulation
B major insulation
C either of the above
D none of the above
Upto the critical radius of insulation, added insulation, will
A Increase the heat loss
B Decrease heat loss and will have no effect beyond that
C Decrease heat flux
D Reduce convection heat loss compared to conduction heat less
A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be
A Zero
B BLI
C B2LI
D BLI2
The thickness of the layer of insulation on the conductor, in cables, depends upon
A Reactive power
B Power factor
C Voltage
D Current carrying capacity
Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
A Normal to both current and magnetic field
B In the same direction as current
C In a direction anti parallel to magnetic field
D None of the above
A good conductor while carrying current is
A Alternately charged positive and negative
B Negatively charged
C Positively charged
D Electrically neutral
Which of the following is a good conductor of heat but bad conductor of electricity ?
A Asbestos
B Celluloid
C Straw Board
D Mica

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