Top Electronics Communications Interview Questions :: ALLInterview.com http://www.allinterview.com Top Electronics Communications Interview Questions en-us what are active and Passive Components? http://www.allinterview.com/showanswers/3678.html ACTIVE COMPONENTS The components which produce the energy in the form of current or voltage are called as active components. Example:transistors etc,. PASSIVE COMPONENTS The components which stores the energy in the form of curren what is the difference between 5v capacitor and 5v battery http://www.allinterview.com/showanswers/33227.html capacitor allows only ac it blocks dc.but battery doesen't What is Race-around problem? How can you rectify it? http://www.allinterview.com/showanswers/10617.html in jk flip flop race around problem will accur when both the inputs are high. it can be prevented by using master slave jk flip flop What is the need for modulation? http://www.allinterview.com/showanswers/10629.html modulation is scheme under which the the signal is first modified to suitable form(compress or amplied)and mixwd with the carrier for trassmission How can you convert an JK Flip-flop to a D Flip-flop? http://www.allinterview.com/showanswers/10616.html By connecting J&K input terminal with a not gate. now input at j terminal. what is the working principal of diode http://www.allinterview.com/showanswers/14049.html diffusion What do you mean by 3 dB cutoff frequency? Why is it 3 dB, not 1 dB? http://www.allinterview.com/showanswers/10636.html 3db implies 70%(o.7o7) of the power,i'e we r interested to consider the bandwidth range from peak to 70% b'coz uptp 70% its reliable.hence 3db is called as half power freq What is CMRR? Explain briefly. http://www.allinterview.com/showanswers/58449.html cmrr means commmon mode rejection ratio.. it is ratio of differential mode divided by ratio of common mode. In interview we are asked "WHAT IS YOUR POSITIVE AND NEGATIVE P http://www.allinterview.com/showanswers/36798.html If suppose any body face the above question then you must answer with out any hesitation. That answer is ,'' I have very strong analytical skills. I will try to solve the problem's source not th Which type of modulation is used in TV transmission? http://www.allinterview.com/showanswers/10630.html V.S.B. What is the basic difference between Latches and Flip flops? http://www.allinterview.com/showanswers/10613.html latch is a device which is used as switch,f/f is a storing element what is the difference between the voltage of 5 volts capacitor and http://www.allinterview.com/showanswers/1306.html By 5 volts battery we get only D.C (constant) waveform voltage but by the 5 volt capacitor we get sine wave (alernative waveform) What is Biasing? http://www.allinterview.com/showanswers/16825.html Biasing is defined as the when the electrical energy applied to the pn junction it cancels the potential barrier is called biasing. WHAT IS THE USES OF PLC? http://www.allinterview.com/showanswers/21001.html programmable logic controller is used to provide system flexibility ,reducing weight & cost. How can you convert an SR Flip-flop to a JK Flip-flop? http://www.allinterview.com/showanswers/10615.html by using clock to the rs f/f we can convert it to jk f/f