sir iam appearing railway exam 12to 15 times but unfortunately i could not qualify the written examination.can u give some suggestion for how to appear. this examination

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WHAT IS THE DIFFERENCE BETWEEN B.E AND B.Tech? which is the better one to choose according to you?

3 Answers  

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Why is 400 hz used for flight instruments and radio transmission system in aviation industry universally?

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What do you understand by leds? How do they work?

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Define diffusion current in a semiconductor.

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call flow in gsm

1 Answers   Aricent, Ericsson,

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What is the difference between d-latch and d flip-flop?

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documentation on improved trace buffer via Selective Data Capture Using 2-D Compaction for Post-Silicon Debug

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What are the main purposes for which a cc amplifier may be used.

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How receiver detect that which is information signal and which is carrier signal and how it seprate both at destination?

4 Answers   Airtel,

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why cristal frequency is different in microcontrollers and crystal oscillators?

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Define holding current?

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