February 2022

A cumulative compound long shunt motor is driving a load at rated torque and rated speed. If the series is shunted by a resistance equal to the resistance of the series field, keeping the torque constant.

A cumulative compound long shunt motor is driving a load at rated torque and rated speed. If the series is shunted by a resistance equal to the resistance of the series field, keeping the torque constant.

A cumulative compound long shunt motor is driving a load at rated torque and rated speed

A cumulative compound long shunt motor is driving a load at rated torque and rated speed. If the series is shunted by a resistance equal to the resistance of the series field, keeping the torque constant. Read More »

Neglecting all losses, the developed torque (T) of a DC separately excited motor

Neglecting all losses, the developed torque (T) of a DC separately excited motor, operating under constant terminal voltage, is related to its output power (P) as under

Neglecting all losses, the developed torque (T) of a DC separately excited motor, operating under constant terminal voltage, is related to its output power (P) as under

Neglecting all losses, the developed torque (T) of a DC separately excited motor, operating under constant terminal voltage, is related to its output power (P) as under Read More »

Two DC series motors connected in series draw current I from supply and run at speed N. When the same two motors are connected in parallel taking current I from the supply, the speed of each motor will be

Two DC series motors connected in series draw current I from supply and run at speed N. When the same two motors are connected in parallel taking current I from the supply, the speed of each motor will be

Two DC series motors connected in series draw current I from supply and run at speed N. When the same two motors are connected in parallel taking current I from the supply, the speed of each motor will be

Two DC series motors connected in series draw current I from supply and run at speed N. When the same two motors are connected in parallel taking current I from the supply, the speed of each motor will be Read More »

A short shunt compound generator supplies a load current of 100 A at 250 V.

A short shunt compound generator supplies a load current of 100 A at 250 V. The generator has the following winding resistances: shunt field = 130Ω, Armature 0.1 Ω and series field = 0.1 Ω . Find the Emf generated if the brush drop is 1 V per brush.

A short shunt compound generator supplies a load current of 100 A at 250 V

A short shunt compound generator supplies a load current of 100 A at 250 V. The generator has the following winding resistances: shunt field = 130Ω, Armature 0.1 Ω and series field = 0.1 Ω . Find the Emf generated if the brush drop is 1 V per brush. Read More »

A 4 pole, lap wound d.c motor has 540 conductors and 230 V supply. The armature resistance is 0.8Ω. Its speed found to be 1000 r.p.m. the flux per pole is 25 mWb. The Induced e.m.f.and Armature current will be

A 4 pole, lap wound d.c motor has 540 conductors and 230 V supply. The armature resistance is 0.8Ω. Its speed found to be 1000 r.p.m. the flux per pole is 25 mWb. The Induced e.m.f.and Armature current will be

A 4 pole, lap wound d.c motor has 540 conductors and 230 V supply. The armature resistance is 0.8Ω. Its speed found to be 1000 r.p.m. the flux per pole is 25 mWb. The Induced e.m.f.and Armature current will be

A 4 pole, lap wound d.c motor has 540 conductors and 230 V supply. The armature resistance is 0.8Ω. Its speed found to be 1000 r.p.m. the flux per pole is 25 mWb. The Induced e.m.f.and Armature current will be Read More »

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