Q1/A/ A 50-hp, 250-V, 1200 r/min shunt de motor has a rated armature current of 170 A and a rated field current of 5 A. When its rotor is blocked, an armature voltage of 10.2 V(exclusive of brushes) produces 170 A of current flow, and a field voltage of 250 V produces a field current flow of 5 A. The brush voltage drop is assumed to be 2 V. At no load with the terminal voltage equal to 240 V, the armature current is equal to 13.2 A, the field current is 4.8 A, and the motor's speed is 1150 r/min. What is the motor's efficiency?

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: A 500V shunt motor runs at its normal speed of 10 rev/s when the armature current is 120A. The…

A:

Q: A 55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has…

A:

Q: he current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is ?

A: Given: Terminal voltage, V = 230 V. Armature resistance, Ra=0.5 Ω. Back emf, Eb=200 V.

Q: Q9) Specifications for a PM DC motor are as follows: electrical constant (KEMF) = 0.014V/rpm • and…

A: Given Data:A PMDC motor with,Electrical constant Armature resistance Input DC voltage To…

Q: shunt-wound DC motor with the field coils and rotor connected in parallel (Figure 1) operates rom a…

A: Given Data:Supply voltage Vdc = 130 VField winding resistance Rf= 208 ΩArmature winding resistance…

Q: A 400 V series motor has a field resistance of 0.02 ohm and an armature resistance of 0.1 ohm. The…

A: It is given that: IL1=Ia1=30 AN1=1000 rpmRse=0.02 ΩRa=0.1 ΩVt=400 VRsh=0.03 ΩT2=0.6T1

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.