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, 270 rpm.

2166.67V, 230 rpm.

541.67V, 200 rpm.

541.67V, 250 rpm.

2166.67V, 270 rpm.

2166.67V, 230 rpm.

541.67V, 200 rpm.

541.67V, 250 rpm.

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Electrical Machines
Slip test is performed to determine

slip

All of these

positive sequence reactance and negative sequence reactance

direct axis reactance and quadrature axis reactance

slip

All of these

positive sequence reactance and negative sequence reactance

direct axis reactance and quadrature axis reactance

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Electrical Machines
In a 3 - ÃŽÂ¦ IM with line frequency f1 and winding factor kw1 and kw2 for stator and rotor respectively the ratio of per phase stator winding emf E1 to per phase rotor winding emf E2 at standstill is given by

E1 / E2 = f1kw1 / f2kw2.

E1 / E2 = N1 / N2.

E1 / E2 = N1kw1 / N2kw2.

E1 / E2 = 1.

E1 / E2 = f1kw1 / f2kw2.

E1 / E2 = N1 / N2.

E1 / E2 = N1kw1 / N2kw2.

E1 / E2 = 1.

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Electrical Machines
What is the function of inter pole in DC generator?

Both option B and C.

To neutralize the distortion of main field flux due to armature reaction.

To get a superior commutation.

To serve the economical aspects.

Both option B and C.

To neutralize the distortion of main field flux due to armature reaction.

To get a superior commutation.

To serve the economical aspects.

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Electrical Machines
In a single phase induction motor, the starting torque developed is proportional to

supply voltage V

1/V²

1/V

V²

supply voltage V

1/V²

1/V

V²

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Electrical Machines
Cogging of induction motor occurs at

high voltage and when stator and rotor poles are equal.

high voltage and when stator and rotor poles are not equal.

low voltage and when stator and rotor poles are not equal.

low voltage and when stator and rotor poles are equal.

high voltage and when stator and rotor poles are equal.

high voltage and when stator and rotor poles are not equal.

low voltage and when stator and rotor poles are not equal.

low voltage and when stator and rotor poles are equal.

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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 Slip test is performed to determine

Electrical Machines In a 3 - ÃŽÂ¦ IM with line frequency f1 and winding factor kw1 and kw2 for stator and rotor respectively the ratio of per phase stator winding emf E1 to per phase rotor winding emf E2 at standstill is given by

Electrical Machines What is the function of inter pole in DC generator?

Electrical Machines In a single phase induction motor, the starting torque developed is proportional to

Electrical Machines Cogging of induction motor occurs at

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
Slip test is performed to determine

Electrical Machines
In a 3 - ÃŽÂ¦ IM with line frequency f1 and winding factor kw1 and kw2 for stator and rotor respectively the ratio of per phase stator winding emf E1 to per phase rotor winding emf E2 at standstill is given by

Electrical Machines
What is the function of inter pole in DC generator?

Electrical Machines
In a single phase induction motor, the starting torque developed is proportional to

Electrical Machines
Cogging of induction motor occurs at