Determine the speed and slip of the machine

Assignment Help Electrical Engineering

Reference no: EM131201261

An AC induction machine has six poles and is designed for 60-Hz, 240-V (rms) operation. When the machine operates with 10 percent slip, it produces 60 N-m of torque.

a. The machine is now used in conjunction with a friction load which opposes a torque of 50 N-m. Determine the speed and slip of the machine when used with the above mentioned load.

b. If the machine has an efficiency of 92 percent, what minimum rms current is required for operation with the load of part a)?

Reference no: EM131201261

Questions Cloud

Calculate the input current and power factor of the motor : A six-pole, three-phase, 440-V, 60-Hz induction motor has the following model impedances

Which stage of the product life cycle is the dvd today : In the 1990s, DVDs replaced audiocassettes and floppy disks as the storage media of choice for music and computers. At which stage of the product life cycle is the DVD today?

Prepare an adjusted trial balance : Journalize the November transactions. - Prepare a trial balance at November 30.- Journalize and post adjusting entries.- Prepare an adjusted trial balance.

Calculate the equivalent stator resistance per phase : A blocked-rotor test was performed on a 5-hp, 220-V, four-pole, 60 Hz, three-phase induction motor. The following data were obtained: V = 48 V, I = 18 A, P = 610 W.

Determine the speed and slip of the machine : An AC induction machine has six poles and is designed for 60-Hz, 240-V (rms) operation. When the machine operates with 10 percent slip, it produces 60 N-m of torque.

Compute the motor speed and torque at a slip of 0.04 : A six-pole induction motor for vehicle traction has a 50-kW rating and is 85 percent efficient. If the supply is 220 V at 60 Hz, compute the motor speed and torque at a slip of 0.04.

What was the impact of weather on sales : What was your initial strategy? How did that strategy change over time? What was the impact of weather on sales?

What factor are starting torque and starting current reduce : To reduce the starting current, a three-phase squirrel-cage induction motor is started by reducing the line voltage to Vs/2. By what factor are the starting torque and the starting current reduced?

Prepare a draft of audit report for review by audit partner : The audit partner has indicated that a qualified opinion is more appropriate than an adverse opinion.- Prepare a draft of the audit report for review by the audit partner.

User Account

All Pages