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 load2 3243
The normal highest generated voltage in India is a) 6.6KV b) 132KV c) 11KV13 13210
ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit4 2007
Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?
How will I know that how many batteries I should connect to my UPS unit?3 6141
A 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 400V4 2771
Buchholz relay is used ………. a) protection T/F b) oil T/F c) Air core T/F8 9431
Resistor switching is used in which type Circuit Breaker ? a) oil filled CB b) Air blast CB c) Gas filled CB11 18859
In EHV tranm. The conductors are …….. a) Cu roads b) Cu bars with Si c) Cu tube with Si plate2 2966
the max. power will be transferred if …… a) sending end vol. is high b) receiving end v is high c)…….. d) corona loss is least2 2765
Moving Iron instruments are applicable with a) DC only b) AC only c) DC & AC14 8812
. 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) zero1 972
The 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 & length1 1734
According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor785
by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.
why single CT used in DOL starter power circuit?
WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI
Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.
Why slip ring ind. motor power consumption is low compare to induction motor .same 90 kw motor used same load output
What happen when change order of CT in GIS feeder?
why power factor is important?
How to do maintenance of transformer feeder.
List of equipments required foe industrial repair lab.
What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?
WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?
how can you calculate fault level ?
upto how many load can v connect to stabilizer which is used for tv
WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.