All Questions


Warning: Trying to access array offset on false in /home3/indiakep/public_html/wp-content/plugins/dw-question-answer/inc/Template.php on line 8
All Questions › Category: Electrical
Filter:AllOpenResolvedClosedUnanswered
What are the advantages of PWM inverters?
AnsweredChetan Shidling asked 6 years ago • 
1033 views1 answers0 votes
What are the limitations of stepped wave inverters?
AnsweredChetan Shidling asked 6 years ago • 
1137 views1 answers0 votes
What are the Operating Regions of Induction Motor?
AnsweredChetan Shidling asked 6 years ago • 
1379 views1 answers0 votes
What is Slip Speed Control in induction motor?
OpenChetan Shidling asked 6 years ago • 
1173 views0 answers0 votes
What is Variable frequency control in induction motor?
AnsweredChetan Shidling asked 6 years ago • 
1019 views1 answers0 votes
What are the advantages of squirrel cage induction motors over a dc motor?
AnsweredChetan Shidling asked 6 years ago • 
2410 views1 answers0 votes
The variable frequency control provides good running and transient performance because of which features?
AnsweredChetan Shidling asked 6 years ago • 
1056 views1 answers0 votes
What is even harmonics in electrical engineering?
OpenChetan Shidling asked 6 years ago • 
1047 views0 answers0 votes
What is odd harmonics?
AnsweredChetan Shidling asked 6 years ago • 
1026 views1 answers0 votes
What is half wave symmetry?
OpenChetan Shidling asked 6 years ago • 
1045 views0 answers0 votes
Analysis of IM Fed from Non-Sinusoidal Voltage Supply?
OpenChetan Shidling asked 6 years ago • 
1059 views0 answers0 votes
What is Unbalanced Voltages in electric drives?
OpenChetan Shidling asked 6 years ago • 
973 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 • 
3121 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 • 
2023 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 • 
1787 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 • 
1395 views1 answers0 votes
Any odd harmonics in the current of an induction motor will result in magnetic field which?
Answeredcs asked 6 years ago • 
2094 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 • 
1230 views1 answers0 votes
Consider the following conditions for an induction motor fed by variable voltage variable frequency drive,
Answeredcs asked 6 years ago • 
1000 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 • 
1000 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 • 
947 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 • 
1738 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 • 
1331 views1 answers0 votes
What are the types of speed control of induction motor?
Answeredcs asked 6 years ago • 
851 views1 answers0 votes
What is braking of induction motor?
Opencs asked 6 years ago • 
803 views0 answers0 votes
What is steady state analysis of Induction motor?
Opencs asked 6 years ago • 
898 views0 answers0 votes
What is wound rotor induction motor?
Opencs asked 6 years ago • 
811 views0 answers0 votes
What is Squirrel cage induction motor?
Opencs asked 6 years ago • 
828 views0 answers0 votes
What are the types of Induction motor?
Answeredcs asked 6 years ago • 
901 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 • 
2083 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 • 
2314 views0 answers-3 votes
Comparison between PMAC and BLDC motors?
Opencs asked 6 years ago • 
937 views0 answers0 votes
What is full form of SPMSM in motors?
Answeredcs asked 6 years ago • 
884 views1 answers0 votes
What is full form of IPMSM in motors?
Answeredcs asked 6 years ago • 
909 views1 answers0 votes
What are the advantages of IPMSM over SPMSM?
Answeredcs asked 6 years ago • 
1404 views1 answers0 votes
What are the disadvantages of permanent magnet (PM) motor?
Answeredcs asked 6 years ago • 
935 views1 answers0 votes
What are the advantages of PM motors?
Answeredcs asked 6 years ago • 
883 views1 answers0 votes
What are the applications of PMSM?
Answeredcs asked 6 years ago • 
1013 views1 answers0 votes
What are the types of PMAC Synchronous motors?
Answeredcs asked 6 years ago • 
991 views1 answers0 votes
What is permanent magnet ac drives?
Answeredcs asked 6 years ago • 
1070 views1 answers0 votes
What is self controlled synchronous motor drive?
Opencs asked 6 years ago • 
962 views0 answers0 votes
What is hysteresis synchronous motors?
Opencs asked 6 years ago • 
827 views0 answers0 votes
What is synchronous reluctance motors?
Opencs asked 6 years ago • 
764 views0 answers0 votes
What is interior PM motors?
Opencs asked 6 years ago • 
763 views0 answers0 votes
What is surface mounted (PM) motors?
Opencs asked 6 years ago • 
796 views0 answers0 votes
What is permanent magnet (PM) synchronous motors?
Opencs asked 6 years ago • 
974 views0 answers0 votes
What is Wound field synchronous motor?
Opencs asked 6 years ago • 
995 views0 answers0 votes
Why power factor can not be controlled in permanent magnet motor?
Opencs asked 6 years ago • 
925 views0 answers0 votes
What are the types of synchronous motor?
Answeredcs asked 6 years ago • 
1065 views1 answers0 votes
What are the types of speed control for switched reluctance motor?
Answeredcs asked 6 years ago • 
1005 views1 answers0 votes
What are the disadvantages of switched reluctance motor?
Answeredcs asked 6 years ago • 
1418 views1 answers0 votes
What are the advantages of switched reluctance motor?
Answeredcs asked 6 years ago • 
1045 views1 answers0 votes
What is Switched Reluctance Motor Drives?
Answeredcs asked 6 years ago • 
1055 views1 answers0 votes
Which is best website for electrical engineers to gain knowledge?
Answeredcs asked 6 years ago • 
835 views1 answers0 votes
Suppose that a negative-electrode material has θneg0%=0.01 and θneg100%=0.81. If θnegk=0.61, what is the present cell state-of-charge (in percent)? Round to the nearest percent.
Answeredcs asked 6 years ago • 
1883 views1 answers0 votes
What is cost of ceiling fan?
OpenNitin asked 6 years ago • 
941 views0 answers0 votes
What are some consequences of using a simple BMS power-limits algorithm instead of a more accurate but more complicated BMS algorithm?
AnsweredChetu asked 6 years ago • 
1152 views1 answers0 votes
Which of the following quantities must we estimate because it is impossible to measure their values? Select all that apply.
AnsweredChetu asked 6 years ago • 
1032 views1 answers0 votes
Which battery-pack quantities might a host application need to know? Select all that apply.
AnsweredChetu asked 6 years ago • 
1174 views1 answers0 votes
What type(s) of fault(s) should a BMS be able to detect? Select all that apply.
AnsweredChetu asked 6 years ago • 
1530 views1 answers0 votes
1…1718192021…24