The direct-on-line starter is used to start a small dc motor because it limits initial current drawn by armature circuit.

Related MCQs

• A starter is required for a 220-V shunt motor. The maximum allowable current is 55 A and the minimum current is about 35 A. The armature resistance of the motor is 0.4 Ω. What will be the number of sections of starter resistance required?
• motor. The maximum allowable current is 55 A and the minimum current is about 35 A. The armature resistance of the motor is 0.4 Ω. What will be the number of sections of starter resistance required?
• Motor will start quickly when used without starter.
• Thyristor controlled starter is preferred over DOL starter due to                    
• For a 7.46 kW, 200 V dc shunt motor with full load efficiency of 85% has armature resistance of 0.25 ohms. Calculate the value of starting resistance in ohms for a current 1.5 times of the full load current.
• A 100 hp, 250 V, 350 A shunt dc motor with an armature resistance of 0.05 ohms. To limit maximum starting current to twice the rated of its value, what will be the number of stages of starting resistances?
• What will happen if DC motor is used without starter?
• No load current in induction motor is 10- 20% of full load current and the no load current of transformer is 2-6%.
• full load efficiency of 85% has armature resistance of 0.25 ohms. Calculate the value of starting resistance in ohms for a current 1.5 times of the full load current.
• With a P-pole DC machine with armature current Ia, the current per brush arm for a lap connected windings is?