A 1.5 hp Permanent magnet motor generates a voltage of 90 V when the motor runs at 2900 r/mine and the armature current 14.5 A. calculate the following: a) The number of conductors on the armature b) The value of the counter-emf at full load c) The flux per pole, in milliwebers [mWb] The following details are given: Armature diameter: 73 mm armature length: armature slots 115 mm 20 commutator bars: 40 turns per coil: 5 Armature resistance at 20°C: 0.34 2. THO Hel

Q: Reason for the change in the flux.

A: Since, the flux related to the system is directly proportional to the M.M.F. and inversely…

Q: SOLVE AND SHOW YOUR COMPLETE SOLUTION. ANSWERS SHOULD BE IN TWO DECIMAL PLACES. The armature of a…

A:

Q: 1. Current flowing through the field coils : a. Magnetizes the pole pieces. b. Makes the generator…

A: MCQs type questions are given. Note: As per Bartleby Portal, I am solving first three MCQs.

Q: P R₁ E 1 + + E2 ww R3 R₂ E3 +

A:

Q: Mechanical losses represent: A. Windage losses B. None of the other choices are correct O C. Losses…

A: In this answer let us try to understand what are mechanical losses as explained below.

Q: Maximum torque is realized when an armature winding is with the magnetic field at 90° O inline or at…

A: With reference to synchronous machines, the load angle or the power angle is the angle between the…

Q: electromotive force created by a direct current generator is proportional to Flux/pole…

A: We need to tell about generated emf . We know direct formula for emf .

Q: What happens to the reluctance of a magnetic path if its length is doubled? If the crosssectional…

A: The formula for Reluctance is: R=lμAWhere,R=Reluctancel=Length of the magnetic pathA=Cross section…

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.