Question

There is a 4-pole three-phase induction motor of 20 kW, 60 Hz. At this time, the...

There is a 4-pole three-phase induction motor of 20 kW, 60 Hz. At this time, the slip is 0.05 when the load is applied, find secondary copper loss and secondary input.

Homework Answers

Answer #1

secondary input is also known as rotor input/airgap power.

2) secondary copper losses is also called rotor copper losses

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 37.3 kW, 3 phase, 4 pole, 50 Hz, induction motor has a full load efficiency...
A 37.3 kW, 3 phase, 4 pole, 50 Hz, induction motor has a full load efficiency of 85%. The friction and windage losses are one third of the no load losses and the copper loss equals the iron loss at full load. Find the full load speed. Stator resistance may be neglected. [Answer: 1401.3 rpm]
Q1. A 440 V, 60 Hz, six-pole, 3 phase induction motor is taking 50 kVA at...
Q1. A 440 V, 60 Hz, six-pole, 3 phase induction motor is taking 50 kVA at 0.8 power factor and is running at a slip of 2.5 percent. The stator copper losses are 0.5 kW and rotational losses are 2.5 kW. i) The rotor copper losses ii) The shaft hp iii) The efficiency iv) The shaft torque
Q4) A three-phase, 104 kW, 3300 V, 50 Hz, Y-connected induction motor delivers full output power...
Q4) A three-phase, 104 kW, 3300 V, 50 Hz, Y-connected induction motor delivers full output power to a load connected to its shaft. The full-load slip is 0.02 and full-load power factor is 0.85 lagging. If the stator copper loss is 2400 W, the stator core loss is 3500 W, and the friction and windage loss is 1200 W. Calculate: (i) The developed mechanical power. (ii) The air gap power. (iii) The rotor copper loss. (iv) The efficiency of the...
A 230 volt, 60 Hz, 4 pole star connected, three phase induction motor operates at a...
A 230 volt, 60 Hz, 4 pole star connected, three phase induction motor operates at a full load speed of 1710 rpm. The power developed at this speed is 2 horse power. If the supply voltage fluctuates ±10%, determine the torque range of the motor.
A 208 V 10 Hp four pole 60 Hz Y connected induction motor has a full...
A 208 V 10 Hp four pole 60 Hz Y connected induction motor has a full load slip of 5%. What is the output power of this motor in kW? If friction and windage loss is 350 watts, what is the gross mechanical output at full load? What is the gross torque of this motor at full load? What is the rotor cupper loss at full load? If the efficiency of this motor is 90% at full load what is...
Suppose you have the same three-phase induction motor as the following conditions. It has conditions of...
Suppose you have the same three-phase induction motor as the following conditions. It has conditions of rated output=80]kW", rated voltage=[220V] and polarity=4 and is operated at slip s=0.05 with efficiency of 90%. In this case, determine primary input [kW], secondary efficiency [%], rotor input power [kW], and rotor copper loss [kW].
A 100 KW (OUT PUT), 3300V, 50 Hz, 3-Phase star connected induction motor has a synchronous...
A 100 KW (OUT PUT), 3300V, 50 Hz, 3-Phase star connected induction motor has a synchronous speed of 500 rpm. The full load slip is 1.8%and full load power factor 0.85. Stator copper loss=2440W. Iron loss=3500W. Rotational losses= 1200W. calculate : The rotor copper loss The line current The full load motor efficiency.
Problem 3: A 3-phase, 4 pole, 50 Hz induction motor is supplied by 200 V supply....
Problem 3: A 3-phase, 4 pole, 50 Hz induction motor is supplied by 200 V supply. Its full load slip is 2%. At full load, stator copper losses are same as rotor copper losses. Stator iron losses are 50% more than stator copper losses. Mechanical losses are one third of no load losses. Full load output is 50 H.P. Calculate the efficiency on full load.
The following test data apply to a 7.5-hp, three-phase, 220-V, 19-A,60-Hz, four-pole induction motor with a...
The following test data apply to a 7.5-hp, three-phase, 220-V, 19-A,60-Hz, four-pole induction motor with a double-squirrel-cage rotor of design class C (high-starting-torque, low-starting current type): Test 1: No-load test at 60 Hz; Applied voltage V = 219 V line-to-line; Average phase current I1,nl = 5.70 A; Power Pnl =380 W; Test 2: Blocked-rotor test at 15 Hz; Applied voltage V = 26.5 V line-to-line; Average phase current ll,bl = 18.57 A; Power Pbl = 675 W; Test 3: Average...
Problem 4: A 6 pole, three phase, 50 Hz induction motor has rotor resistance of 0.075...
Problem 4: A 6 pole, three phase, 50 Hz induction motor has rotor resistance of 0.075 ohm and standstill reactance of 0.125 ohm per phase. On full load it is running at a speed of 240 r.p.m. The rotor induced e.m.f per phase at standstill is observed to be 16 V. Calculate; Starting torque, Full load torque Maximum torque Speed at max torque Problem 5: The following data refers to a 10-pole, 200 V, 50 Hz, 3 phase induction motor?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT