In the operation of n-p-n transistor compared to that of a triode, the p base acts as
emitter
cathode
grid
plate
In the diagram, the input AC is across the terminals A and C. The output across B and D is
same as the input
half wave rectified
zero
full wave rectified
A common emitter amplifier gives an output of 3 V for an input of 0.01 V. If β of the transistor is 100 and the input resistance is 1 kΩ, then the collector resistance is
1 kΩ
3 kΩ
30 kΩ
30 kΩ
When the forward bias voltage of a diode is changed from 0.6 V to 0.7 V, the current changes from 5 mA to 15 mA. Then its forward bias resistance is
0.01 Ω
0.1 Ω
10 Ω
100 Ω
In common emitter amplifier, the current gain is 62. The collector resistance and input resistance are 5 kΩ and 500 Ω respectively. If the input voltage is 0.1 V, the output voltage is
0.61 V
6.2 V
62 V
620 V
The current gain of a transistor in common base mode is 0.995. The current gain of the same transistor in common emitter mode is
197
201
199
202
C.
199
The real time variation of input signals A and B are as shown below. If the inputs are fed into NAND gate, then select the output signal from the following
The time variations of signals are given as in A, B and C. Point out the true statement from the following
A, B and C are analogue signals
A and B are analogue, but C is digital signal
A and C digital, but B is analogue signal
A and C are analogue but B is digital signal
The energy gap between conduction band and the valence band is of the order of 0.7 eV. Then it is
an insulator
a conductor
a semiconductor
an alloy