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Un-Answered Questions { Electrical Engineering }

Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com

197


A 2083kva AVR was tested, phase to ground shows continuity, what is the implications

230


Different types of relay fault which phase sequence??

129


If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.

138


how to compare with Relay settings for HT< panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps

133


how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?

137


In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

40


how to revers the direction of single phase motor

40


How much voltage we need to apply in 33kv cable during hipot test of cable

60


An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.

69