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Transfer of electric power from primary to secondary in a transformer takes place A electrically B magnetically C electro-magnetically D conductively
2 7926Resistance of low voltage side of transformer compared to high voltage side is A less B equal C more D depens on design
1 5691As load in a transformer increases, mutual flux linkage in core= A increases B decreases C not change D first increase then decrease
2 8368Are we do it in single transformer with dual primary as 11 KV and 33 KV and constant output as 415 Volts?.
1 3207In 3 phase induction motor even with low Voltage it reaches nearly it's rated speed why? (for example instead of 400V it reaches with 250V)
2 471877 In constant power region of 3-phase IM torque-speed characteristics, the torque is proportional to A speed B slip C 1/speed D 1/slip
1 2762In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above
2054In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
2244In constant power region of 3-phase IM torque-speed characteristics, if frequency increases voltage A does not alter B decreases C increases D none of above
1 2770Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
2184Stator of 3-phase IM has 3 slots per pole per phase, calculate number of stator pole pairs. A 1 B 6 C 2 D 3
2 4569A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3
2020Post New Electrical Engineering Questions
i want to apper for apgenco or aptransco or related can any one sugest me where can i get previous papers of thouse exams
Mention the methods for starting an induction motor?
What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines
What are the roles and responsibilities of electrical engineer in cement plant
whatare the disadvantages occur,if the form factor of transmission will not be equal to 1.11
No load tap changing transformer working
HOW WE CHOOSE EARTH'S POTENTIAL AS ZERO V?
how to determine ct ratio in ht vcb?
Define the overload capacity of the motor?
What are electric motors?
after how many spot we must chang secondry cable in portable spot welding gun?
What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side
What is the difference between a fuse and a breaker?
What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?
What is proportional controller?
