Electronics Communications Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electronics Communications Interview Questions

Questions Answers Views Company eMail

what is unijunction transistor(ujt)?

6 16214

What is Virtual Handoff ?

2 6080

what is the unit of capasitance

3 5980

What is the real time applications of Time Division Multiplexing ?

IBM,

9 60490

Explain the Proportionates of Ordinary concrete,Standard concrete,High Stength Concrete of Grades "M10,M15,M20" , "M25,M30,M35,M40,M45,M50,M55" , "M60,M65,M70,M75,M80" Respectively.

2145

What is satellite cooding in telecom transmission system?

2088

which one of the following is the oldest mountain range in india?

UPSC,

4 6436

what is resistive diode?

2386

which is the syllabus of the ongc next month exam pls send me on my mail id..

ONGC,

2055

How VFD (variable frequency drive) works? What's its function?

1 10178

What are the properties of FFT? What happens when you pass a signal of 1000Hz through an FFT?????

2298

negative feedback connections in flip flop

1 4377

Why in TV transmission amplitude modulation is used for Video and FM for Audio. Is is possible FM for Video transmission

Sail,

8 35535

how can i calculate increase electrical signal power expected at the photodiode detector output given 2 optical loss coefficients and the distance covered using multimode.thank you.

2206

how can we get the output of half adder by using 555 timer circuit,give it desired circuit diagram

Infosys, TCS,

2360

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Un-Answered Questions { Electronics Communications }

Define fbus protocol?

1029

Components that use negative dc voltage

1928

pls send me the placement papers and anyother useful information to sureshec127@gmail.com. STREAM: ELECTRONICS AND COMMUNICATION

1781

Which was intel's first microprocessor

1120

What is the binary number system?

1069

working principle of direct digital controllers(DDC Panel)

4102

State sampling theorem.

1065

Explain the difference between inductance and resistance?

936

What is universal motor?

1089

Define what is meant by voltage regulation of a dc power supply?

1043

Differentiate between ppi and input output devices.

1111

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?

2074

Explain what are the two mechanisms of breakdown in a p-n junction?

1216

Explain the difference between masking and non-masking?

1067

Explain the use of excitation table in digital electronics?

911

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