IN AN OSCILLOSCOPE TWO COUPLING IS THERE, THAT IS AC & DC COUPLING, WHERE DO WE USE THESE COUPLINGS ?
2 5851How will you send and receive data to a micro-processor? (One method is I/O mapped I/O which is the other one?)
1 4668What is 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? Explain an ideal voltage source? Explain 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 half-duplex and full-duplex communication? Which range of signals is used for terrestrial transmission? Why is there 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? Explain 3 dB cutoff frequency? Why is it 3 dB, not 1 dB? Explain ASCII, EBCDIC?
3 9278I have attended Scientist Entry Test on 7th Sep. Hereby I am submitting paper for Electronics and Communication branch…….. Hope it helps future aspirants……..
1889Post New DRDO Interview Questions
What’s attribute?
What does mysql_query return?
What are Global Middleware and Route Middleware ?
Is zf a component library or a framework?
How to check the thermocouple is correctly connected to cable for K type? (i,e positive pole is connected to non magnetic conductor and negative pole is connected to magnetic conductor)
How tables are managed in apache tajo?
What is servlet in spring?
Differentiate between kirchhoff’s first law and kirchhoff’s second law?
Which sort algorithm is best?
Why bapi need then bdc ? : abap bdc
Write a sample code to write the contents to text file in c#?
What is deadline monitoring?
What are literals in python?
Write notes on the following: (a) The concept of Know Your Customer (KYC) (b) Endorsement of cheques (c) Pay Order (d) Bank Draft
Which is illegal identifier in java?