A 220 volt dc series motor is running at a speed of 800 rpm and draws 100 amperes. Calculate at what speed the motor will run when developing half the torque. Total resistance of the armature and field is 0.1 ohm.

Q: A series motor runs at 700 rev/min when the voltage is 300 V and the current is 20 A. The armature…

A: Initial speed of motor N1=700 rpm. Initial terminal voltage V1=300 V. Armature current Ia=20 A.…

Q: (e) The coil of a simple electric motor has a resistance of 200 N. At start-up the motor uses 242 W…

A: Given Data:A simple electric motor with,The coil resistance The power at start-up The power at full…

Q: A 280 V shunt motor has an armature resistance of 0.3 Q and field resistance of 115 Q. At no load,…

A:

Q: 1. When running at its operating speed, a 215-V dc motor with an armature whose resistance is 1.70 2…

A: Given data,VT  = 215 VoltsRa = 1.70 OhmsIL  = Ia = 22.0 AWe know that for a dc motor, V = Eb +…

Q: The rotor of an induction motor has a moment of inertia of 5kgm2. What is the torque required to…

A: Given data,  Inertia is given as, I=5 kgm2 Final speed Nf=1800 rpm Initial speed Ni=1600 rpm Time t…

Q: . In a dc shunt motor, the shunt field resistance is 100 ohms and the armature resistance is 0.01…

A: The speed of the DC shunt motor is inversely proportional  to flux. The flux is  directly…

Q: de motors

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Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.