Interested to Buy Any Domain ? << Click Here >> for more details...
No load test of induction motor is carried out to compute= A stator resistance B rotor resistance C magnetizing reactance D rotor reactance
1 5210Short circuit test of induction motor is carried out to compute= A stator resistance B rotor resistance C magnetizing reactance D stator reactance
2 6411Auto transformer starter gives the same effect as star/delta strater if its turn ratio = A 0.5 B 0.67 C o.66 D 0.577
1 3815Rotor resistance starter is used to obtain= A increased starting torque B decrease starting current C decrease starting loss D increase efficiency
1 2770Plugging is a phenomenon to= A braking the motor B to accelerate the motor C to run IM as generator D to start the motor
3094During regenerative breaking= A rotating magnetic field is reversed B slip is positive C torque is positive D slip is negative
2130In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring
197029 Which of the following breaking method save energy? A regenerative breaking B plugging C dynamic breaking D none of above
1 3849Electromagnetic torque developed by the motor is compared to shaft torque. A less B same C depends on motor design D more
3 6326Electromagnetic torque developed by the motor is compared to shaft torque. A less B same C depends on motor design D more
2037An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm
2285An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%
1931An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor frequency at maximum torque point is A 3.33% B 4.44% C 5.55% D 6.66%
1 3798In an ideal transformer no load primary current I0 A lags behind V1 by 90 degree B is in the phase with V1 C leads V1 by 90 degree D lags V1 by 45 degree
1 5338Post New Electrical Engineering Questions
why power factor is important?
WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING
solor panels arrange some angle,panel is flat fitted energy was produced or not why?
what is the use of sdf?
What are the basic & Majour problems in UPS ?
i am trying to PSUs/govermeant jobs since last 2 years but still i m not success, plz help me.
how i chosse capacitor bank if my energy meter is 48 kvr? tell me capacitor bank chossen formula?
what is inverter and converter
sir iam a 3rd yr eee student.no core company comes for recruitment to our college.my aim is to be placed in l and t.tell me the procedures.
How to measure current and voltage in an ELV circuit
What is the Load Capacity of Panther conductor (0.2) and dog conductor (0.2)
what ispositive, negative, zero sequence impedence?
Why open circuit test of transformers is conducted at rated voltage??Why not any other voltage??
what is the difference between changer, converter and transformer?
How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?
