An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

Electrical Machines
An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

2166.67V, 230 rpm.

2166.67V, 270 rpm.

541.67V, 200 rpm.

541.67V, 250 rpm.

2166.67V, 230 rpm.

2166.67V, 270 rpm.

541.67V, 200 rpm.

541.67V, 250 rpm.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A compound motor has

tertiary winding.

both shunt and series field winding.

only series field winding.

only shunt field winding.

tertiary winding.

both shunt and series field winding.

only series field winding.

only shunt field winding.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Stepper motor is used in

traction

All of these

food processing

computer printers

traction

All of these

food processing

computer printers

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The air gap between stator and the rotor of the 3 - φ induction motor is kept

as small as possible.

air gap does not matter.

as wide as possible.

depends on the material of stator and the rotor.

as small as possible.

air gap does not matter.

as wide as possible.

depends on the material of stator and the rotor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The armature shaft must be able to withstand

any unbalanced magnetic pull on the armature core.

All of these

twisting strains due to transmission of torque.

bending moment due to weight of the armature.

any unbalanced magnetic pull on the armature core.

All of these

twisting strains due to transmission of torque.

bending moment due to weight of the armature.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a transformer operating at constant voltage if the input frequency increases, the core loss

increase.

decrease.

remains constant.

None of these

increase.

decrease.

remains constant.

None of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

Electrical Machines A compound motor has

Electrical Machines Stepper motor is used in

Electrical Machines The air gap between stator and the rotor of the 3 - φ induction motor is kept

Electrical Machines The armature shaft must be able to withstand

Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss

Electrical Machines
An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

Electrical Machines
A compound motor has

Electrical Machines
Stepper motor is used in

Electrical Machines
The air gap between stator and the rotor of the 3 - φ induction motor is kept

Electrical Machines
The armature shaft must be able to withstand

Electrical Machines
In a transformer operating at constant voltage if the input frequency increases, the core loss