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 5075ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit
4 4606Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?
L&T,
2 7622A 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 5766Resistor switching is used in which type Circuit Breaker ? a) oil filled CB b) Air blast CB c) Gas filled CB
11 29380In EHV tranm. The conductors are …….. a) Cu roads b) Cu bars with Si c) Cu tube with Si plate
2 4951the 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 4791. 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 2280The 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 3266According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor
1626Post New Electrical Engineering Questions
does a DG set has low fault level as compared to that of a transformer.If yes then why.
If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?
WHY BLADE & JOW OF ISOLETOR IN SUBSTATION?
What is the general system requirement of alternator?
we have 2.2kw,Y,3000rpm motor but 6leads found in TB what happen if we connect in delta?
All tape of electrical questions Answers tape of motor transformer e.o.t crane
Define ampere
A cable with concentric PE conductor must be used with frequency converter circuits what does its means.?
how to calculation increase power factor for single phase
primery try cell?
What is ferro-resonance in electrical system? Why it occurs and what are measures to prevent it?
how to build a network which step down 415v to 1v rms
Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?
In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?
how many joint can done in HT line and what is life of the joint