If a 3-phase induction motor is to be fed by a fixed 50 Hz supply voltage, is it possible that the induction motor operates at a speed of 4000 RPM? YES/NO? WHY?
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
If a 3-phase induction motor is to be fed by a fixed 50 Hz supply voltage,...
A 50-KW, 220V, 50 Hz, squirrel-cage three-phase induction motor is needed to rotate a mine conveyor belt drive. The motor starts sometimes under load, but most of the time is needed to run at rated speed and slip of 3.5%. (a) Propose an appropriate design of this drive motor in order to suit the application. Motivate and then illustrate your design with suitable drawings and speed (slip)-torque graphs. [12] (b) If the supply voltage of the motor in (a) above...
1. A six pole, 240V, 50 Hz three phase squirrel-cage induction motor has a no-load speed of 103 rad/s and a speed regulation of 5% at rated load. Find the amount of slip (in rpm) at full load for this motor. 2.. A 2 HP, 240 VAC, 60 Hz, capacitor-start motor is 75% efficient and draws 10 A at full load. What is this motor's power factor at rated load? 3. A wound rotor, 3 phase induction motor in Mr....
Question: The equivalent circuit of a 440 V, 3-phase, 8 pole, and 50 Hz star-connected induction motor is shown in figure 1. The short-circuit test is conducted with a locked rotor and a line current of 80 A. The open-circuit test is conducted by supplying the stator winding at rated voltage and at the rotor is rotating freely without any mechanical load. Fig. 1 The per-phase equivalent circuit of a 3-phase induction motora) Determine the line voltage and power factor on the...
a four pole 60-Hz, 440-V three phase induction motor is supplied by a variable voltage variable frequency source. the motor has negible stator resistance and a rotor resistance of 0.1 ohm. the total inductance is 2 x 10 ^-3 H. a)find lowest possible frequency and voltage of proper operation. b) determine the starting torque, the speed at maximum torque, and the router's applied voltage when supply frequency is 8 hz, 40 hz and 60 hz
d) A 440V, 50 Hz, 4-pole, 3 phase induction motor has a total leakage impedance of (0.3 +j5.5+0.25/s) ohm (delta phase). Determine the external resistance to be inserted in each phase of the rotor winding such that the motor produce a gross torque of 130 N-m at a speed of 1300 rpm. (10 Marks)
d) A 440V, 50 Hz, 4-pole, 3 phase induction motor has a total leakage impedance of (0.3 +j5.5+0.25/s) ohm (delta phase). Determine the external resistance to...
A 4-pole, 60 hz, 3-phase induction motor has a blocked rotor reactance per phase that is four times the rotor resistance per phase. At what speed will the motor develop maximum torque? 1200 rpm 1500 rpm 1350 rpm 1620 rpm What is the ratio of maximum to full load torque in a motor having slip of 4% at full load and 20% at maximum torque? 15 3 2.6 5.2 If a motor has a slip of 2% at rated voltage,...
Three-phase induction motor The three-phase induction motor nameplate gives the following information: 100 HP, 6 poles, 600 V, 60 Hz, PF =0.87. Rated motor slip s=0.0275 and rated motor current is 91.7 A. Measured at rated speed friction and ventilation losses are 1100 W. Measured between two motor terminals resistance is 0.305 Ω. f) For a load such where the motor rotates at the speed of 1180 r / min, determine shaft torque and calculate the mechanical power in HP,...
The equivalent circuit of a 440 V, 3-phase, 8 pole, and 50 Hz star-connected induction motor is shown in figure 1. The short-circuit test is conducted with a locked rotor and a line current of 80 A. The open-circuit test is conducted by supplying the stator winding at rated voltage and at the rotor is rotating freely without any mechanical load.a) Determine the line voltage and power factor on the short circuit test;b) We need to apply a low...
A 5 hp, 4-pole, 50 Hz, three phase induction motor. If the full-load speed is 1300 rpm, calculate the slip rpm 250 200 300 2 1 1 HTML
A separately excited dc motor is fed by a 3-phase, 6-pulse converter shown in figure Q5. The 3-phase line is a 500 V, 60 Hz supply. At rated condition, the dc motor armature current is 15 A. The dc motor armature resistance is 0.15 Ω and the rated speed is 1700 rpm. If the delay angle of the converter is 36 °, calculate the following: 3-phase (2 0 line Figure Q5. (2 marks) Rated voltage of the motor a. b....