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 4789ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit
4 4138Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?
L&T,
2 7287A 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 5232Resistor switching is used in which type Circuit Breaker ? a) oil filled CB b) Air blast CB c) Gas filled CB
11 28108In EHV tranm. The conductors are …….. a) Cu roads b) Cu bars with Si c) Cu tube with Si plate
2 4597the 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 4412. 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 2064The 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 3000According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor
1493Post New Electrical Engineering Questions
What is the comparison between 30mA DP RCCB and 100mA DP RCCB and can replace it against 63A MCB
What is the normal phase difference between the voltage and the no-load current in a transformer?
how to generator maintenance (A Check, B check,Etc)
please give me solution to rectify the emi(electromagnetic interference)
why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??
sir pls send the je exam - 2008 and other model question papers..
1- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks
what is the IEC standard for Power Cable installation in onshore (like in direct buried ground or above groung)
what is the pulse and audio frequency transformer? what is different between induction regulators and tap changing transformer?
EXPLAIN THE TERMS "INTEREST AND DEPRECIATION" AS APPLIED TO ECONOMICS OF POWER GENERATION.
What is 11 N1 and 12 N2 in single phase Transformer ?
How do you determine the size of transformer radiators in a transformer?
what is cascade speed control device?and how this device control the speed of motors?
i have applied for the post of RRB section engineering chennai board please send me previou papers and solved answer. my mail id jagarapusrinivas@gmail.com