Related Questions

A direct on line starter is used: for starting motors
A Up to 5 H.P.
B Up to 10 H.P.
C Up to 15 H.P.
D Up to 20 H.P.
Three point starter can be used for
A Series motor only
B Shunt motor only
C Compound motor only
D Both shunt and compound motor
Reduced voltage starter can be used with
A Slip ring motor only but not with squirrel cage induction motor
B Squirrel cage induction motor only but not with slip ring motor
C Squirrel cage as well as slip ring induction motor
D None of the above
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
A three point starter is considered suitable for
A Shunt motors
B Shunt as well as compound motors
C Shunt, compound and series motors
D All D.C. motors
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
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

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