

if you want also the
characteristics of series wound DC motor do put a comment.
Hope this helps.
Do give a like if you like the answer. It'll encourage me to write more quality answers.
Q1. Summarize the formulas which describe the relationships among applied voltage, armature current, rotor speed, and...
Q1. Draw the equivalent circuits of a separately excited and a shunt DC motor. [20] Q2. Derive the speed-torque relation for a DC motor: [40] 0 = VR, Kø (KØ)??ind Q3. A DC motor's speed can be controlled by either changing the field resistance, changing the armature voltage or changing the armature resistance. Of these three, which one is the best method for DC motor speed control and which is the worst? Give reasons. [40]
2) (a) Describe the principle of operation of 3-phase induction motor. [8 Marks](b) Explain slip as applied to three phase induction motor. [2 Marks]3) Derive an expression for the total armature torque of DC motor. [10 Marks]5) List the starting methods used in starting 3-phase induction motors and explain any two of these methods. [10 Marks]6) (a) A 60 kW, 400 V d.c. shunt motor has 4 poles a 2-circuit wave-connected armature winding with 450 conductors. The flux per pole...
A three phase induction motor draws a starting current which is five times the full load current with direct on line starting, while developing twice the full load torque. Q2.1. Based on the two facts that starting current is proportional to the applied voltage and that the starting torque is proportional to the square of the applied voltage, determine voltage (as a per cent of rated voltage) required to obtain a starting torque equalling the full load torque. (10 marks)...
(might be 1 or 2, MCQ questions were having images given with them, which we couldn't insert, so ignore those questions if you cannot answer, sorry for inconveinience created, i tried to delete them but might be couldn't done all) 3) Single phase induction motors work because: a) The oscillating magnetic field can induce starting torque in a rotor. b) The oscillating magnetic field can induce running torque in a rotor. c) A capacitance or inductance can create the phase...