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Explain when a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of silicon will be higher than that of germanium, why?
1088Post New Electronics Communications Questions
What type of questions are asked in Tetra pak onlinr test
What is meant by inverter?
if building "b" height casts a shadow "f ' feet long . the same day a tree "t" feet height will cast a shadow how many feet long ? a)ft/b b)fb/t c)b/ft d)tb/f e)t/fb
Why is silicon preferred over germanium in the manufacture of semiconductor devices?
What are the advantages and disadvantages of jfet over bjt?
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?
Sir, Plz send the last 5 yrs ques papers for Railway board's section engineer post. Thanks, c_k_chand@yahoo.co.in
What is satellite cooding in telecom transmission system?
Draw and explain a mod-10 counter.
What is simulator programme?
What are the pros of using plasma screens.
explain the trasistor sizing procedure for a four inputNOR and four input NAND Gate?
What are the basic logic gates?
Explain the different modes of flyback converter
what is the distance maintained between the power and data cables with respect to the KVA .... plss give me the formula
