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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 5703ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit
4 5551Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?
L&T,
2 8308A 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 6693Resistor switching is used in which type Circuit Breaker ? a) oil filled CB b) Air blast CB c) Gas filled CB
11 31829In EHV tranm. The conductors are …….. a) Cu roads b) Cu bars with Si c) Cu tube with Si plate
2 5697the 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 5587. 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 2772The 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 3829According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor
1974Post New Electrical Engineering Questions
mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....
in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?
how to select energy meter? have any calculation?
What is pi controller?
why star point of HT motor not earthed?
For high frequency application we use which transformer?
What is the efficiency during maximum power transfer?
(1)WHAT HAPPENS WHEN SUDDENLY LOAD GIVEN TO THE INDUCTION MOTOR ? (2)CAN WE MAKE WOOD AS MAGNET ? (3)WHAT IS THE VALUE OF MAGNETIC FLUX DENSITY IN TRANSFORMER ? (4)WHY WE ARE USING ELECTROMAGNETI NOT ELECTROSTATIC IN MACHINE ?
PAC and simple Ac different
How to do fabrication , busbar and wiring cost for : 1. LT Panels 2. C& R Panel
what is the relation between reactive power and power factor for the what is the limit of reactive power and power factor
How generating electric power export to grid from the generating station ?
how to calculate the conductor size for certain KV transmission line and distribution line?
how to calculate the settings for shaft ct protn in hydro generators
If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021
