1

Which are the main dimensions of rotating
machine?

2

Explain the terms : Electrical loading , Magnetic
loading

Electrical
loading
Electrical
loading = IZ
Where Z =
Number of conductors
Magnetic
loading
Magnetic
loading = pФ
Where Ф = flux
per pole


3

Explain the terms : Specific electrical loading,
Specific magnetic loading

Specific
electrical loading
Specific
electrical loading = IZ / πD
Where D = Diameter
of armature
Specific
magnetic loading
Specific
magnetic loading = pФ / πDL
Where D =
Diameter of armature and
L = Length of
armature


4

On which factors the output of rotating machine
depends?

The output of
the rotating machine depends upon specific electrical loading and specific
magnetic loading.


5

What is output coefficient?

Output
coefficient


6

Write the output coefficient equation for DC
machine and AC machine.

Output
coefficient equation
DC machine
AC machine
Where K_{w}
= Winding factor


7

Describe the relation between volume of machine
and output coefficient.

Relation
between volume and output coefficient


8

Describe the effect of specific electrical and
specific magnetic loading on the size of machine.

Size
of machine


9

On which factor the specific magnetic loading of
rotating machine depends?

The
specific magnetic loading of rotating machine depends upon


10

On which factor the flux density in the teeth
depends?

The
flux density in the teeth depends upon the specific magnetic loading.


11

At which portion of the tooth the maximum value
of flux density occurs?

Flux
density in the tooth


12

Give reason : The small machines have low
specific magnetic loading.

Specific
Magnetic Loading


13

Explain the term : Magnetic current

Magnetizing
current


14

Describe the effect of specific magnetic loading
on magnetizing current.

Effect
of specific magnetic loading on magnetizing current


15

Why the specific magnetic loading on induction
motor is kept low as compared to DC machines?

DC
machine
Induction
Motor

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