Inductance smooths current Świtch opens and closes periodically v,(1) RA Vs 27 Armature Ia flows through diode while switch is open Figure 15.25

Q: The winding impedances under starting conditions for a 60-Hz 0.5-hp motor are shown in Figure…

A: Given data: The phase angle between the currents Ia and Im is 90°   Consider the Im be θm, The…

Q: A 250V series motor runs at 500 rpm at rated load current of 75 A. The armature circuit has a…

A: It is given that: V=250 VN1=500 rpmIL1=Ia1=75 ARa+Rse=0.2 Ωϕ α Ia

Q: An AC induction machine has six poles and isdesigned for 60-Hz, 240-V (rms) operation. When…

A: Given P=6f=60 HzVrms=240 Vs=10%T =60 Nm Calculating synchronous speed Ns=120fPNs=120×606Ns=1200 rpm

Q: Sketch the torque versus speed characteristic for a series-connected dc motor.

A: The circuit diagram of the DC series motor can be drawn as  Thus for constant power motor : Ns α 1Γ…

Q: A Short Shunt Compound DC Generator supplies 100-amp at 110-volt. Series field resistance   of…

A:

Motor Load, Torque, and Power Quality Requirement

An electric motor is a gadget that changes electrical energy into mechanical energy over to follow up on a mechanical burden. The weight set on the motor because of this mechanical movement is known as motor load. Appropriately matching the motor burden to the engine is vital to forestall harm to the engine or wasteful and unnecessary expensive activity. Engines perform such undertakings as moving a thing starting with one spot then onto the next, cutting it, changing its shape, etc. The motors might be evaluated as far as a few variables including power yield, voltage, current, and temperature. Harm to an engine might happen when it is worked under over the top engine load contrasted with its appraised limit.