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If the characteristic Impedance is equal to load Impedance then…… a) voltage will be increased b) power transmission is zero c) …… d) max. power is transmission to load
2 5615ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit
4 5387Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?
L&T,
2 8206A 25MVA 3300/400V T/F is termed as per winding is …… a) primary 3300V & Secondary 400V b) primary 3300V & low voltage winding 400V c) High voltage winding 3300V & Secondary 400V d) High voltage winding 3300V & low voltage winding 400V
4 6550Resistor switching is used in which type Circuit Breaker ? a) oil filled CB b) Air blast CB c) Gas filled CB
11 31546In EHV tranm. The conductors are …….. a) Cu roads b) Cu bars with Si c) Cu tube with Si plate
2 5609the max. power will be transferred if …… a) sending end vol. is high b) receiving end v is high c)…….. d) corona loss is least
2 5473. The string effcy in AC sys is 80% Then for same power, the string effcy in dc sys is a) less than 80% b) 80% c) more than 80% d) zero
1 2709The temperature rise in the sys, which leads to ….. a) Increases stress& length b) increases stress but decreases length c) Decreases stress & increase length d) decrease stress & length
1 3749According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor
1925Post New Electrical Engineering Questions
How I calculate the ELCB for circuit breakers?
List the power rating of any 5 important electrical appliances used in houses.
can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.
what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter?
In a flange coupling, the flange bolts are designed for
how can tell us the AC indoor or outdoor which Tr and formulls
what is the current density of copper & alluminium.
CAN CU XLPE/PVC CABLE BE USED INPLACE OF LOW NOISE SCREENED CABLE? KINDLY GIVE REASONS
Where can I get Iidian straderd specifications for electrical items or works in web? please help me.
physical identification of HT & LT panel
Classify milling machines.
How select ELCB for 32amp. socket having quantity 12Nos. We have to do this wiring in PLANT. Please Also explain the incoming cable specification.
how to commissioning the genset with amf panel?
in control scheme dc logic wiring commonly using negative loop,what is the reason?if we use positive looping what will happen?
What is the function of RCBO? What are the different sensitivity ratings & each application?
