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in optical fiber cabels, which type of losses can be occured, and how the signal-loss happens?
2 4592In order to find out stack fault of a three input nand gate how many necessary input vectors are needed ?
4981There is a toy train that can make 10 musical sounds. It makes 2 musical sounds after being defective. What is the probability that same musical sound would be produced 5 times consecutively? ( 1 of _____) ?
TCS,
2 54651.what is the difference between snr and cnr?why cnr is used in satellite communication? 2.prove that power spectral density of gaussian noise os n/2
31861.support that band limited signals are not realisable. and realisable signals are having infinte band width
1 4369Post New Electronics Communications Questions
Typically, an IA has an external resistor used for A Establishing the output impedance B Setting the voltage gain C Setting the current gain D Interfacing with an instrument
If we have 450 mm height boiler drum level, so what is span & zero value for a dpt transmitter?
What is meant by commutation?
whats the reason behind SF fault on siemens PLC.please explain in detail.
if UT=4v & V LT=-2v the hysteresis voltage is equal to......?
Which type of devicesa used for detection of radio active field in side the reactor building?
What are the advantages of parallel optical interface?
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?
Define what is a rectifier?
Explain why the antenna is called passive element?
What is a trducer and trponder?
Explain what is reverse saturation current?
Write down the expression for average output voltage for step up chopper?
Does area of work only involve closed spaces?
What is fbus protocol and its use?
