Analog Electronics Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250, are cascaded. The open circuit voltage gain of combined amplifier is 49dB 51dB 102dB 98dB 49dB 51dB 102dB 98dB ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics Which of the following is expected to have highest input impedance? CE bipolar transistor. JEFT amplifier. Common collector bipolar transistor MOSFET. CE bipolar transistor. JEFT amplifier. Common collector bipolar transistor MOSFET. ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics In a JFET, if the gate voltage Vgs is made more negative, then channel conductivity decreases. channel conductivity increases. channel electric current increases . depletion region decreases. channel conductivity decreases. channel conductivity increases. channel electric current increases . depletion region decreases. ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics Negative feedback in an amplifier Increase frequency &phase distortion Reduces gain Reduces bandwidth Increases noise Increase frequency &phase distortion Reduces gain Reduces bandwidth Increases noise ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics In CE configuration, the input V-I characteristics are drawn by taking VCE versus IC for constant value of IE. VBE versus IB for constant value of IC. VBE versus IE for constant value of VCE. VBE versus IB for constant value of VCE. VCE versus IC for constant value of IE. VBE versus IB for constant value of IC. VBE versus IE for constant value of VCE. VBE versus IB for constant value of VCE. ANSWER DOWNLOAD EXAMIANS APP
Analog Electronics When there is no base current in a transistor switch, the output voltage from the transistor is unchanged. low. high. unknown. unchanged. low. high. unknown. ANSWER DOWNLOAD EXAMIANS APP
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