What 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 Answers   DRDO, Electronics,

---

Zener diode is invariably used with

2 Answers  

---

Where PCM is used?

2 Answers  

---

What is DNS server and resolver

1 Answers   Aricent,

---

why voltage series is most preferred?

0 Answers  

---

---

what is serial communication??

0 Answers  

---

I'would like to know the type of questios asked for STA (senior technical assistant)interview in DRDO.whats the nature of the interview? whether theres HR and Technical interview?

2 Answers   DRDO, India Post,

---

"11101111" when that bit oriented message transmitting from sender to receiver.how is it calculate parity bit and how is it show bit stream that would be transmitted..by even parity error detection scheme..pls send me an answer..very important,,

0 Answers  

---

HAI HELLO EVERYBODY, GOOD EVINING. THIS IS ANIL KUMAR. IAM WORKING AS A OSS-SR.ENGG IAM LOOKING FOR LEARNING TELECOM PROTOCOLS. PLZ HELP ME. HOW COULD I GET INFORMATION AND MATERILS.

0 Answers  

---

what is the uses of transister in electronic circuits?

6 Answers   LG Soft,

---

sample papers for post of A.E. in P.S.E.B.

2 Answers   APTransco, FGH, Malwa, PSEB, PSPCL, VCV,

---

why cristal frequency is different in microcontrollers and crystal oscillators?

0 Answers  

---