Prepare the winding table for a four-pole dynamo with 24 slots and 24 commutator bars employing simplex lap winding

how does the rotor of a 3-phase induction motor get power a-  through brushes and commutador segments b- through brushes and slip ring c- indution from the stator d- none of the above

The frequency of rotor current in an induction motor is       slip times the frequency of stator current.       slip times the frequency of supply,     One by slip times the frequency of stator current.       One by slip times the frequency of supply

A 110 V, 60 Hz, 6 — pole single phase induction motor 1/3 hp has the following equivalent circuit impedances: RI = 1.52 ohm, R2 = 3.13 ohm and xl =2.10 ohm, x2 =1.56 ohm. Xm=58.2 ohm, The friction, windage and stry losses =16W, the core loss = 35 W. For a slip of 0.05, calculate (a) input current, (b) power factor, (c) developed power, (d) output power, (e) speed (f) in put power (g) air gab power (h) T ind (i) T load (j) efficiency.

There are 160 double wound slots in a 3-phase, 50 Hz., 600 rpm, star connected alternator. Coil span is 15 slots and there are 3 turns per coil. Flux per pole is 0.1120 WB. Calculate (1) emf per conductor (2) emf per coil.

In a three-phase induction motor the maximum torque occurs at 20% slip and the equivalent resistance of the secondary is 0.04Ω per phase. Find the equivalent load resistance and the load voltage and the load current. Output power is 20 kW.

Is this armature winding a progressive or a retro-progressive winding? W N Select one: 2 B 4' O a. Both O b. Progressive OC. Neither O d. Retro-progressive B S