Answer Posted / ponnu(the elite)
oil,water,air.most of all we r using oil
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what is meant by twilight switches 7 where its applicable ?
What is s-domain and its significance?
how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .
8. A DYNAMOMETER TYPE WATTMETER RESPONDS TO THE.......
Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.
does a DG set has low fault level as compared to that of a transformer.If yes then why.
following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?
Classify driling machines.
Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?
why we can use 1 to 5V dc
if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.
Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason
1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?
What are the types of instrument transformer?
how to calculate current carring capacity of cable and cable selection? 1) copper flexible cable 2) copper armoured cable 3) Aluminium cable
