A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is

Electrical Machines
A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is

2, 3, 5

1, 4, 5

1, 4

2,3

2, 3, 5

1, 4, 5

1, 4

2,3

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Electrical Machines
A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.0 Ω and armature current is 10 A. of the excitation of the machine is reduced by 10%, the extra resistance to be put in the armature circuit to maintain the same speed and torque will be

3.1 Ω

2 .1 Ω

1.8 9 Ω

1.79 Ω

3.1 Ω

2 .1 Ω

1.8 9 Ω

1.79 Ω

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Electrical Machines
In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will

improve but terminal voltage will fall.

worsen and terminal voltage will rise.

worsen and terminal voltage will fall

improve and terminal voltage will rise .

improve but terminal voltage will fall.

worsen and terminal voltage will rise.

worsen and terminal voltage will fall

improve and terminal voltage will rise .

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Electrical Machines
If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be

no resistance is connected.

series.

any one of the connection.

parallel.

no resistance is connected.

series.

any one of the connection.

parallel.

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Electrical Machines
In case of a compensated DC series motor, the compensating winding is provided

In parallel with the armature winding.

As a separate unit.

In series with the armature winding.

In parallel with the field winding.

In parallel with the armature winding.

As a separate unit.

In series with the armature winding.

In parallel with the field winding.

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Electrical Machines
Stepper motor is used in

traction

food processing

computer printers

All of these

traction

food processing

computer printers

All of these

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Electrical Machines

Electrical Machines A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.0 Ω and armature current is 10 A. of the excitation of the machine is reduced by 10%, the extra resistance to be put in the armature circuit to maintain the same speed and torque will be

Electrical Machines In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will

Electrical Machines If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be

Electrical Machines In case of a compensated DC series motor, the compensating winding is provided

Electrical Machines Stepper motor is used in

Electrical Machines
A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.0 Ω and armature current is 10 A. of the excitation of the machine is reduced by 10%, the extra resistance to be put in the armature circuit to maintain the same speed and torque will be

Electrical Machines
In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will

Electrical Machines
If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be

Electrical Machines
In case of a compensated DC series motor, the compensating winding is provided

Electrical Machines
Stepper motor is used in