what is the diffrence between S7 200 & S7 300 plc

0 Answers   Amara Raja,

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How many 2:1 multiplexers do we need to make a 2 input xor gate?

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an anyone help me out to get hpcl officer's trainee paper's pattern....nithinjyothy@gmail.com

0 Answers   HPCL,

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if building "b" height casts a shadow "f ' feet long . the same day a tree "t" feet height will cast a shadow how many feet long ? a)ft/b b)fb/t c)b/ft d)tb/f e)t/fb

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Define what is meant by filter?

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How can we remove unwanted sideband from ssb modulation?

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What is meant by Location Area?

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what is the use of -3 db frequency?& why does it exist in filters?

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Define circuit turn off time

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Explain why normally control terminal of 555 timer is connected to ground through a 0.01µf bypass capacitor?

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Where pll is widely used?

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I have recieved an interview call from HECL that is Heavy Engineering Corporation Ltd, Ranchi , Jharkhand. Can you please provide me some Electronics and Communication questions for preparation as early as possible since I am left with just one week.

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