In a manual shunt motor starter

A Over load relay is connected in series and no volt relay in parallel with the load
B Over load relay is connected in parallel and no volt relay in series with the load
C Over load relay and no volt relay are both connected in series with the load
D Over load relay and no volt relay are both connected in parallel with the load

Correct Answer: Over load relay is connected in series and no volt relay in parallel with the load

Bissoy MCQ
#Electrical Engineering #D.C. Motors

Related Questions

If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens
A This will make armature to take heavy current, possibly burning it
B This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses
C Nothing will happen to motor
D Motor will come to stop
If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens
A Nothing will happen to the motor
B This will make armature to take heavy current, possibly burning it
C This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses
D Motor will run at very slow speed
If the speed of a D.C. shunt motor is increased, the back e.m.f. of the motor will
A Increase
B Decrease
C Remain same
D Become zero
If the field of a D.C. shunt motor gets opened while motor is running
A The speed of motor will be reduced %
B The armature current will reduce
C The motor will attain dangerously high speed 1
D The motor will continue to run at constant speed
For starting a D.C. motor a starter is required because
A It limits the speed of the motor
B It limits the starting current to a safe value
C It starts the motor
D None of the above
The coils of D.C. motor starter are wound with wire of
A Copper
B Kanthal
C Manganin
D Nichrome
It is advisable to avoid line starting of induction motor and use starter because
A It will run in reverse direction
B It will pick up very high speed and may go out of step
C Motor takes five to seven times its full load current
D Starting torque is very high
In a star-delta starter of an induction motor
A Resistance is inserted in the stator
B Reduced voltage is applied to the stator
C Resistance is inserted in the rotor
D Applied voltage per stator phase is 57.7% of the line voltage
The starter motor is driven by
A Chain drive
B Gear drive
C Flat belt drive
D V-belt drive
Of the 120 households in an area, 55 have cars, 35 have motor bikes, and 20 have both cars and motor bikes. How many of the households in the area have neither cares nor motor bikes?
A 110
B 90
C 50
D 30

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