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
98dB
51dB
102dB

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Analog Electronics
A Semiconductor has a

None of these
 Negative Temperature coefficient of resistance
 Constant Temperature coefficient of resistance
 Positive Temperature coefficient of resistance

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