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All Questions › Category: Electrical Industrial Drives
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How electric trains get electric supply?
OpenChetan Shidling asked 3 years ago • 
953 views0 answers0 votes
What is a regenerative breaking?
Answeredchetan shidling asked 6 years ago • 
1106 views1 answers0 votes
Design a closed control loop for speed regulation of the separately excited DC motor for the following set of disturbances?
Openchetan shidling asked 6 years ago • 
1058 views0 answers0 votes
Comparison between CSI (closed loop slip control) and VSI (variable frequency control) drives
AnsweredChetan Shidling asked 6 years ago • 
1311 views1 answers0 votes
What are the advantages of PWM inverters?
AnsweredChetan Shidling asked 6 years ago • 
1027 views1 answers0 votes
What are the limitations of stepped wave inverters?
AnsweredChetan Shidling asked 6 years ago • 
1133 views1 answers0 votes
What are the Operating Regions of Induction Motor?
AnsweredChetan Shidling asked 6 years ago • 
1375 views1 answers0 votes
What is Slip Speed Control in induction motor?
OpenChetan Shidling asked 6 years ago • 
1169 views0 answers0 votes
What is Variable frequency control in induction motor?
AnsweredChetan Shidling asked 6 years ago • 
1016 views1 answers0 votes
What are the advantages of squirrel cage induction motors over a dc motor?
AnsweredChetan Shidling asked 6 years ago • 
2406 views1 answers0 votes
The variable frequency control provides good running and transient performance because of which features?
AnsweredChetan Shidling asked 6 years ago • 
1051 views1 answers0 votes
What is even harmonics in electrical engineering?
OpenChetan Shidling asked 6 years ago • 
1043 views0 answers0 votes
What is odd harmonics?
AnsweredChetan Shidling asked 6 years ago • 
1022 views1 answers0 votes
What is half wave symmetry?
OpenChetan Shidling asked 6 years ago • 
1042 views0 answers0 votes
Analysis of IM Fed from Non-Sinusoidal Voltage Supply?
OpenChetan Shidling asked 6 years ago • 
1054 views0 answers0 votes
What is Unbalanced Voltages in electric drives?
OpenChetan Shidling asked 6 years ago • 
969 views0 answers0 votes
A 440 V, 3-phase, 10 pole 50 Hz synchronous motor delivering a torque of 50/π Nm, delivers a power of
Answeredcs asked 6 years ago • 
3115 views1 answers-2 votes
An induction motor is used for a speed control application. It is driven from an inverter with constant 'V/F' control. The motor name plate details are as follows: 415 V, thee phase, 50 Hz, 2850 rpm. The motor is run with the inverter output frequency set at 40 Hz, and with half the rated slip. The speed of the motor is
Answeredcs asked 6 years ago • 
2019 views1 answers0 votes
A 500 kW, 6.6 kV, 50 Hz, unity power factor, 4 pole, star connected synchronous motor has synchronous reactance 15 Ω, and negligible stator resistance , rated field current is 10 A, what is the braking torque when the motor is under regenerative braking mode
Answeredcs asked 6 years ago • 
1781 views2 answers0 votes
A 3 phase, 4 pole, 50 Hz induction motor running at 1470 rpm is supplied with unbalanced voltage. What is value slip produced due to positive sequence component voltages and negative sequence component voltages
Answeredcs asked 6 years ago • 
1392 views1 answers0 votes
Any odd harmonics in the current of an induction motor will result in magnetic field which?
Answeredcs asked 6 years ago • 
2091 views1 answers-2 votes
3 phase, 6 pole, 50 Hz induction motor is operating with rotor resistance R2 = 0.2 ohm/ph and speed 950 rpm, now the motor has to operate at speed 800 rpm then what value of resistance to be inserted in rotor circuit so as to maintain load torque constant.
Answeredcs asked 6 years ago • 
1226 views1 answers0 votes
Consider the following conditions for an induction motor fed by variable voltage variable frequency drive,
Answeredcs asked 6 years ago • 
995 views1 answers0 votes
A 3 phase, 400 V induction motor is fed from variable frequency drive, when the frequency was 50 Hz the speed of the motor was 950 rpm, and now frequency is changed to 37.5 Hz what would be the motor speed.
Answeredcs asked 6 years ago • 
996 views1 answers0 votes
A 3 phase, 400 V induction motor is fed from variable frequency drive, when the frequency was 50 Hz the speed of the motor was 950 rpm, and now frequency is changed to 37.5 Hz what would be the motor speed.
Opencs asked 6 years ago • 
942 views0 answers0 votes
A 3-phase , 5 kW, 440 V, 0.8 rated pf lagging 50 Hz, 6 pole star connected synchronous motor has negligible stator winding resistance and synchronous reactance of 6 Ω, the power angle at full load is,
Answeredcs asked 6 years ago • 
1732 views1 answers-1 votes
The maximum power delivered by 1500 kW, 3 phase star connected, 4 kV, 48 pole, 50 Hz synchronous motor, with synchronous reactance of 4 Ω/phase and unity power factor.
Answeredcs asked 6 years ago • 
1326 views1 answers0 votes
A 3-phase, 5 kW, 440 V, 0.8 rated power factor (lagging), 50 Hz, 6-pole, Y-connected synchronous motor has negligible stator winding resistance and synchronous reactance of 6 Ω. Calculate (i) Torque angle at full load (ii) Pull out torque (iii) Armature current and power factor at half the rated torque and (iv) Torque when operating at upf and 150% of rated field current.
Opencs asked 6 years ago • 
2078 views0 answers0 votes
A 3-phase, 5 kW, 440 V, 50 Hz, 4-pole, Y-connected synchronous motor has stator winding resistance of 0.2 Ω, synchronous reactance of 8 Ω and a rated field current of 1 A. When operating at full load the power factor is unity. (i) Calculate the torque angle when operating at full load (ii) Pull-out torque and power, (iii) Power factor, armature current and efficiency at half rated torque, and (iv) Field current to get unity power factor at half the rated torque.
Opencs asked 6 years ago • 
2309 views0 answers-3 votes
What are the applications of PMSM?
Answeredcs asked 6 years ago • 
1010 views1 answers0 votes
What are the types of PMAC Synchronous motors?
Answeredcs asked 6 years ago • 
988 views1 answers0 votes
What is permanent magnet ac drives?
Answeredcs asked 6 years ago • 
1066 views1 answers0 votes
What is self controlled synchronous motor drive?
Opencs asked 6 years ago • 
959 views0 answers0 votes
What is permanent magnet (PM) synchronous motors?
Opencs asked 6 years ago • 
970 views0 answers0 votes
What is Wound field synchronous motor?
Opencs asked 6 years ago • 
991 views0 answers0 votes
Why power factor can not be controlled in permanent magnet motor?
Opencs asked 6 years ago • 
921 views0 answers0 votes
What are the types of synchronous motor?
Answeredcs asked 6 years ago • 
1061 views1 answers0 votes
What are the types of speed control for switched reluctance motor?
Answeredcs asked 6 years ago • 
1001 views1 answers0 votes
What are the disadvantages of switched reluctance motor?
Answeredcs asked 6 years ago • 
1414 views1 answers0 votes
What are the advantages of switched reluctance motor?
Answeredcs asked 6 years ago • 
1041 views1 answers0 votes
What is Switched Reluctance Motor Drives?
Answeredcs asked 6 years ago • 
1051 views1 answers0 votes
What is dual converter multi-quadrant operation?
AnsweredCs asked 6 years ago • 
1041 views1 answers0 votes
What are the advantages of PWM inverters?
AnsweredChetan Shidling asked 6 years ago • 
1301 views1 answers0 votes
What are the limitations of stepped wave inverters?
AnsweredChetan Shidling asked 6 years ago • 
1021 views1 answers0 votes
What is plugging in electric drives?
OpenChetan Shidling asked 6 years ago • 
937 views0 answers0 votes
What is dynamic braking in electric drives?
OpenChetan Shidling asked 6 years ago • 
929 views0 answers0 votes
What is regenerative braking in electric drives?
OpenChetan Shidling asked 6 years ago • 
933 views0 answers0 votes
What is braking in electric drive and types of braking?
AnsweredChetan Shidling asked 6 years ago • 
1082 views1 answers0 votes
What is sign convention of speed and torque in electric drives?
AnsweredChetan Shidling asked 6 years ago • 
2344 views1 answers0 votes
What are the advantages of electric drives?
AnsweredChetan Shidling asked 6 years ago • 
934 views1 answers0 votes
Explain the multi-quadrant operation of dc separately excited motor fed from fully controlled rectifier for the following schemes. Single fully controlled rectifier with a reversing switch. Dual converter?
OpenChetan Shidling asked 6 years ago • 
1346 views0 answers0 votes
Explain the motoring control and regenerative braking of chopper control of separately excited dc motor?
OpenChetan Shidling asked 6 years ago • 
1198 views0 answers0 votes
With a neat sketch explain the method of counter current braking for a DC shunt motor, and also draw its speed-torque characteristics?
OpenChetan Shidling asked 6 years ago • 
988 views0 answers0 votes
Explain regenerative and dynamic braking of DC motor. Give their merits and demerits?
OpenChetan Shidling asked 6 years ago • 
858 views0 answers0 votes
Distinguish between active torque and passive torque?
OpenChetan Shidling asked 6 years ago • 
1567 views0 answers0 votes
Explain the speed torque conventions?
OpenChetan Shidling asked 6 years ago • 
977 views0 answers0 votes
What is quadrant diagram? Explain the quadrant diagram for hoist drive system?
OpenChetan Shidling asked 6 years ago • 
884 views0 answers0 votes
Obtain the fundamental torque equations of a motor load system?
OpenChetan Shidling asked 6 years ago • 
850 views0 answers0 votes
What is electric drive? Mention the various types of electric drives and bring out their salient features?
OpenChetan Shidling asked 6 years ago • 
750 views0 answers0 votes
What is electric drive and why it is electric drive is required?
OpenChetan Shidling asked 6 years ago • 
900 views0 answers0 votes