Analog Electronics The Barkhausen criterion for an oscillator Loop gain should be unity Both A and C The phase of a feedback signal with respect to input should be 0° or 360° Loop gain should be less than unity Loop gain should be unity Both A and C The phase of a feedback signal with respect to input should be 0° or 360° Loop gain should be less than unity ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics A quartz crystal oscillator consists of only parallel resonant frequency. only series resonant frequency. neither series nor parallel frequency. both series and parallel frequencies. only parallel resonant frequency. only series resonant frequency. neither series nor parallel frequency. both series and parallel frequencies. ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics When the source voltage increases in a zener regulator, which of these electric current remain approximately constant ? Zener current. Load current. None of these. Series current. Zener current. Load current. None of these. Series current. ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics A zener diode voltage regulator has load requirement of 12 V and 2 Amp. The zener diode's minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is maximum efficiency of circuit? 34.3 %. 52.8 %. 45.5 %. 66.3 %. 34.3 %. 52.8 %. 45.5 %. 66.3 %. ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics The trapped energy of an inductive load can be feed back to the input supply through a diode known as Feed back diode. Powe diode. Zener diode. None of these. Feed back diode. Powe diode. Zener diode. None of these. ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics Negative feedback in an amplifier Reduces bandwidth Increases noise Reduces gain Increase frequency &phase distortion Reduces bandwidth Increases noise Reduces gain Increase frequency &phase distortion ANSWER DOWNLOAD EXAMIANS APP
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