How many marks allocated to Aptitude test and for remaining quetions

0 Answers   APGenco, Genco,

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Explain why 440 volts instead of 660 volts in 3 phases of supply system?

0 Answers  

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in 8051 microcontroller port0 has no internal pullup why?

6 Answers  

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5 years ago betti age three times amy . 10 years ago betti age was half chesler . if c represents chesler current ages which rep amys current age a)c/6+5 b)2c c)(c-10)/3 d)3c-5 e)5c/3-10

1 Answers  

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ring counter's initial state is 01000. after how many clock cylces will it return to the initial state.

8 Answers   Cadence,

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Name all the types of diode with they biasing conditions explained

0 Answers  

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Where PCM is used?

2 Answers  

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what is resister

6 Answers  

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Where to use friend function in binary operator overloading . How? explain with an example.

0 Answers  

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in case of a bipolar junction transistor we are concerned with Vbe,,,Vce(in order to stabilise optiamally)but why don't we bother about Vbc?? why ?

3 Answers  

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What is meant by D-FF? What is the basic difference between Latches and Flip flops? What is a multiplexer? How can you convert an SR Flip-flop to a JK Flip-flop? How can you convert an JK Flip-flop to a D Flip-flop? What is Race-around problem? How can you rectify it? Which semiconductor device is used as a voltage regulator and why? What do you mean by an ideal voltage source? What do you mean by zener breakdown and avalanche breakdown? What are the different types of filters? What is the need of filtering ideal response of filters and actual response of filters? What is sampling theorem? What is impulse response? Explain the advantages and disadvantages of FIR filters compared to IIR counterparts. What is CMRR? Explain briefly. What do you mean by half-duplex and full-duplex communication? Explain briefly. Which range of signals are used for terrestrial transmission? What is the need for modulation? Which type of modulation is used in TV transmission? Why we use vestigial side band (VSB-C3F) transmission for picture? When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency? For asynchronous transmission, is it necessary to supply some synchronizing pulses additionally or to supply or to supply start and stop bit? BPFSK is more efficient than BFSK in presence of noise. Why? What is meant by pre-emphasis and de-emphasis? What do you mean by 3 dB cutoff frequency? Why is it 3 dB, not 1 dB?

0 Answers   MAHINDRA,

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Differentiate between ppi and input output devices.

0 Answers  

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