0
What is the current drawn by the motor if it is connected to a 240V supply?
Wiki User
∙ 8y ago
The motor might be a big one or a small one. A small one takes a little current, a big one takes a big current.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
What will happen if dc supply is given to shunt dc motor?
It will drawn a large amount of current which can destroy the shunt
Why starting current of the motor is high when it is directly connected to supply voltage?
When a motor is stationary, it is not generating a back-mmf which would otherwise act to oppose the applied voltage and, thus, reduce the supply current. However, as the motor runs up to speed, it generates an increasing back-emf, and the supply current falls.
When the dc motor is connected across an AC supply then?
It depends on the construction of the motor. If the field winding is connected in series with the armaturewinding, the motor is like a universal motor and will probably operate normally. If the field winding is connected in parallel with the armature, the motor will not run, but will draw current, make noise and get hot.
What is impact ampere in 50Hz motor connected to 60Hz?
What effect will be there on the motor (Induction) output power when a 100kW 50hz motor is connected to a 60hz power supply.
A delta connected 3 phase motor, shown above, draws a line current of 24 A from a 400 V supply, If fuse F3 blows, determine the current in each phase winding of the motor.IA = IC = IB=?
For proper working of any 3 phase induction motor it must be connected to a 3 phase alternating current (ac) power supply of rated voltage ...
How do you ground a motor?
A motor is grounded with a lug in the motor's junction box. The ground wire in the supply cable is connected to this point. This lug grounds the whole motor frame so if a fault to ground occurs, the fault current will return to the distribution panel where the motor's supply breaker will trip and open the circuit.
What is a DC shunt motor?
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
What is the current in star connection?
If a motor is connected in star, the current in the motor winding will be equivalent to the line current. If the motor is connected in delta, the current will be 1/sqrt(3) of the line current. If three phase CTs are connected in Delta, their secondary current will be sqrt(3) higher than the CT ratio implies by the line current.
Will a 3 phase motor work on grounded B phase?
If the motor is connected to an ungrounded delta supply service there will be no effect on the operation of the motor. If the motor is connected to a wye system supply service and the B phase grounds out, the motor's overload protection would take the motor off line from the electrical supply.
Is the active power supplied to a motor affected by placing of capacitor in parallel with the motor?
No. The capacitor may improve its power factor by altering the effective reactive power of the machine, thus reducing the current drawn from the supply.
Why is a starting current in a DC motor very high?
A rotating d.c. motor generates a back-emf which opposes the supply voltage and reduces the current drawn by the motor. When the motor is stationary, it cannot generate this back emf and, so, the only opposition to current is the resistance of its windings which is relatively low. So, on startup, the current is large; as the machine starts to run, the resulting back emf, acts to reduce the current.
Can a DC series motor with speed control be connected on AC supply?
A dc series motor with speed control can be connected on ac supply because dc machines are totally reversible.
