Q. In a CE amplifier the dc load line is the same as ac load line when

View solution

Q. If the output current wave shape of class C circuit has a period of 1 μs and a pulse width of 0.006 μs, the duty cycle is

View solution

Q. Which configuration is suitable for impedance matching?

View solution

Q. A BJT is said to be operating in saturation region if

View solution

Q. Which component is allowed to pass through it by a choke filter?

View solution

Q. In an amplifier the stray capacitances assume impedance at low frequencies

View solution

Q. In CE amplifier the base current is very high.

View solution

Q. In the graphical analysis of CE amplifier circuit, the upper end of load line is called

View solution

Q. A full wave rectifier supplies a load of 1 kΩ. The a.c. Voltage applied to the diodes is 220 - 0 - 220 Volts rms. If diode resistance is neglected, then Average d.c. Voltage

View solution

Q. Consider 49 cascaded amplifiers having individual rise time as 2 n sec. 3 n sec. ... 50 n sec. The input waveform rise time is 1 n sec. Then the output signal rise time is given time by (Assume output signal rise time is measured within 10 percent range of the final output signal.)

View solution

Q. In a capacitor filter, the time constant RLC should be small.

View solution

Q. A 741 type op-amp has a gain bandwidth product of 1 MHz. A non-inverting amplifier using this op-amp and having a voltage gain of 20 dB will exhibit a -3dB bandwidth of

View solution

Q. In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half the secondary winding is 40 V. If diodes are ideal, the average output voltage is

View solution

Q. In the graphical analysis of an amplifier circuit, the slope of dc load line depends on

View solution

Q. In a self bias circuit for CE amplifier, an increase in emitter resistance RE results in

View solution

Q. For a BJT if β = 50, ICEO = 3 μA and IC = 1.2 mA then IE

View solution

Q. When the circuit is switched on, the loop gain of a Wien bridge oscillator is

View solution

Q. The input to integrating op-amp is a rectangular wave. The output will be

View solution

Q. The most widely used diode rectifier circuit is

View solution

Q. The main advantage of a crystal oscillator

View solution