Transfer of electric power from primary to secondary in a transformer takes place A electrically B magnetically C electro-magnetically D conductively
2 6732Resistance of low voltage side of transformer compared to high voltage side is A less B equal C more D depens on design
1 4846As load in a transformer increases, mutual flux linkage in core= A increases B decreases C not change D first increase then decrease
2 7167Are we do it in single transformer with dual primary as 11 KV and 33 KV and constant output as 415 Volts?.
1 2550In 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 345477 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 1981In 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
1574In 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
1750In 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 1992Stator 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
1679Stator 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 3699A 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
1581Post New Electrical Engineering Questions
1.how many types of relays? 2.difference between ATS& STS?
In synchronous motor, how the field current is related to armature current..i know its inversely proportional..but concept wise...i was nt clear....pls help me...
working principle of AC Servo Motor with its construction
What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?
Define branch?
What is the difference between electronic regulator and ordinary rheostat regulator for fans?
detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron
When and where resistance earthing is used ? How to calculate the time constant for earth fault
Convert a star connected network into a delta connected network.
What are the special cables required for explosion proof wiring?
Metal covered multiconductor cables shall employ a marker tape located within the cable running for its complete length in lieu of cable surface marking. Is it true or false?
I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting
if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain
Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
if i am in front of transmission line how to know that current direction without any equipment
