previous rrb secunderabad exam papers with solutions?
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i want previous papers for rrb fortc
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Why value of rx level is always negative?
#include int main() { char c='1'; int j=atoi(c); }
what is BIAS current/ voltage?
Why silicon type transistors are more often used than germanium type?
when was first developed dmrc.
Which semiconductor device is used as a voltage regulator?
What are the maintenances of a PLC ?
Plz tell me the GATE interview question asked for ECE branch?
Hr round and technical
How the cellular phone is working?
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?
How to convert a binary number into bcd number directly and vice-versa, without converting it into any other number system?
Define what types of carriers are present in space charge region?
Explain the structure of entire GSM.
difference btwn channel and carrier in telecom?