1. Descriptive questions v. In a DC motor, what is a commutator? (1 point) vi. What is asolenoid? (1...

1. Descriptive questions

v. In a DC motor, what is a commutator? (1 point)

vi. What is asolenoid? (1 point)

vii. What is the difference between ahydraulic actuator and a pneumatic actuator?(1 point)

viii. Briefly describe the three phases of the analog-to-digital conversion process?

Expert Solution

keosha answered 1 year ago

What is the process for reversing a DC motor?

A 400 V dc shunt motor has a rated armature current of 76 A at a...

A 400 V dc shunt motor has a rated armature current of 76 A at a speed of 1000 rpm. The armature resistance of the motor is 0.4ohm, the field resistance is 100 ohm, and the rotational losses are 0.9 kW. The load of the motor is bidirectional. Calculate the following: (a) No-load speed of the motor. (b) Motor speed, where the armature current is 60 A during regenerative braking. (c) Developed torque during regenerative braking. (d) Back electromotive force,...

Why is the starting current high in a DC motor? Explain the working of a four-point...

Why is the starting current high in a DC motor? Explain the working of a four-point starter for a DC machine.

A 100 hp, 220 V, 1200 rpm DC shunt motor with an armature resistance of 0.05...

A 100 hp, 220 V, 1200 rpm DC shunt motor with an armature resistance of 0.05 ? and a field resistance of 50 ?. The motor has compensating windings, so armature reactance can be ignored. Mechanical and core losses may be ignored also. The motor is driving a drilling machine, TL ? (1/n). The motor is driving a load with a line current of 120 A and an initial speed of 1200 rpm. Assume Linear Magnetization curve i. What is...

A 230 V, 250 rpm, 100 A separately excited dc motor has an armature resistance of...

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A 230 V, 500 rpm, 100 A separately- excited dc motor has an armature resistance of...

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1. v. What is the meaning of Material Control in Cost Accounting ? vi. Explain Cost...

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‏The speed of a 11 KW, 150 V, 1300 rev/min separately excited DC motor is controlled by a ‏single-phase fully-controlled thyristor converter. The rated motor current is 25 A, and the ‏armature resistance is Ra = 0.5 Ohm. The ac supply is 160 V. The motor voltage constant KE = ‏0.182 V/rev/min. Assume that sufficient inductance is present in the armature circuit to make ‏the armature current continuous and ripple free. ‏For a firing angle of alpha = 20 degree...

The following details are known about a 150 hp motor, 240 V, 500 rpm, dc shunt...

The following details are known about a 150 hp motor, 240 V, 500 rpm, dc shunt motor. Nominal full load current: 500 A Insulation class: H Weight: 3400 kg Find 1.The total losses and efficiency at full load. 2.Calculate the approximate shunt filed exciting current if the shunt field causes 20% of the total losses. 3.Calculate the value of the armature resistance knowing that 50% of the total losses at full load are due to armature resistance. 4.With your calculated...

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