Answer / sachinvom

PNP and NPN. A PNP transistor is that in which a N-type
semiconductor is sand witched between two P-type
semiconductor. A NPN transistor is that in which a P-
type semiconductor is sand - witched between two N-type
semiconductors.

Answer / shatrudhan prasad

two type of transister,npn,pnp.we made npn transister .when select two pn diode thanafter join together.p terminal of first diode is join together p terminal of second diode.

What is the acceptance value of leakage current in HI POT test

2 Answers   CPCL,

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How many types of losses occur in a transformer?

0 Answers  

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While connecting the flood light plug on to the 415 V distribution panel,there was spark and the cable got burnt. Three ignitors of the flood light also burnt of. The lamps are of 400 W (total 6 lamps) connected through 1.5 mm2 cable. The plug was immediately removed from the circuit. There was a 30 mA RCD connected and a 250 A MCCB; however both did not trip. What could be the possible reasons for the circuit devices not to trip?Can someone assist please. Additional info if needed can be provided.

2 Answers  

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i am BSEE student, my project study is to synchronize the generator of an hospital, it have a one 313KVA standby-power diesel gen.,and three 100kva transformer.The generator system is operated manually and no ATS or UPS. one more new building is being build so the transformer will be upgrade to a higher vale. 1)how i can connect the new gen. to the old gen. and to the synchronize panel? 2)what is the new gen. to be buy?(rating, etc.) These is my title: To synchronize the generator system of the ____ Hospital. Anyone have a good title? Thanks.

1 Answers  

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- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

0 Answers  

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what are the main Parts of VCB

1 Answers  

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What is UPS?

14 Answers   HSL,

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is EEE eligible for getting electrical supervisor certificate ? if yes then from which state i sud apply

1 Answers   ONGC,

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Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?

1 Answers  

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what is the most probable reason of failure of current transformer?

2 Answers   L&T,

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what is XLPE type cable

8 Answers   Areva,

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Find the netid and hostid for the following classful IP addresses? i) 117.34.3.8 ii) 132.57.8.6 iii) 207.3.54.12

2 Answers   UOG,

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