EE8401 Electrical Machines -II

A part of wire under magnetic influence , usually placed in armature slot is called

• Turn

• Conductor

• Coil side

• Coil

Two conductors of different slots connected together is called

• Conductor

• Turn

• Coill

• Coil side

Collection of turns is called

• coil

• conductors

• coil side

• turns

How do we call a coil in a single slot

• Conductor

• Turn

• Coil

• Coil side

Total slots in a 2 pole machine is 18. Calculate pole pitch

• 18

• 20

• 9

• 7

Let the pole pitch " n " of a machine is found to be 9. Then what will be the value of short pitch

• n<9

• n>9

• n=9

• n=1

what will be the value of a full pitched machines if the pole pitch " n "is calculated as 10

• n>10

• n<10

• n=10

• n=20

Find the emf per phase of a 4 pole machine with total number of coil per phase is 10 operating at 50 Hz is having flux per pole is 0.8 webers.

• 1776 V

• 59 K V

• 296 V

• 957 V

Calculate the Winding factor of a synchronous machine with distribution factor of 0.95 and pitch factor of 1.2.

• 1.14

• 1.25

• 0.99

• 2.37

For a 4 pole synchronous machine having 4 slots per pole per phase is having short pitch angle of 30 degrees. what will be its pitch factor and distribution factor ( Ans Kp,Kd)

• 30, 0.9

• 90 , 2.5

• 1.9 , 1.536

• 0.965 , 0.653