The transfer characterstic curve of a transistor, having input and output resistance and respectively, is shown in the figure. The Voltage and Power gain are respectively:
The Figure represents a voltage regulator circuit using a Zener diode the break down voltage of Zener diode is 6V and the load resistance is , The series resistance of the circut is . If the battery voltage varies from ,What are the minimum and maximum values of the current through Zener diode?
The truth table for the circuit given in the fig. is :
An npn transistor operates as a common emmitter amplifier, with a power gain of
60 dB. The input circuit resistance is and the output load resistance is .
The common emitter cuttent gain is :
The figure shows a DC voltage regulator circuit, with a Zener diode of breakdown voltage=6V. If the unregulated input voltage varies between 10 V to 16 V, then what is the maximum Zener current?
A common emitter amplifier circuit, built using an npn transistor, is shwon in the figure. Its dc current gain is 250, and what is the minimum base current for to reach saturation?
The logic gate equivalent to the given logic circuit is :
An NPN transistor is used in common emmitter configuration as an amplifire with load resistance. Signal voltage of is applied across the base-emitter. This produces a change in the collector current and change in the base current of the amplifier. The input resistance and voltage gain are :
Drift along river flow
The reverse breakdown voltage of a Zener diode is 5.6 V in the given circuit.
The current through the Zener is :
The circuit shown below contains two ideal diodes, each with a forward resistance of 50. If the battery voltage is 6V, the current through the 100 resistance(in Amperes) is:
In the given circuit the current through Zener Diode is close to:
In the given figure, given that VBB supply can vary from 0 to 5.0 V, , The minimum base current and the input voltage at which the transistor will go to saturation, will be, respectively :
25 and 3.5 V
25 and 2.8 V
20 and 2.8 V
20 and 3.5 V
For the circuit shown below, the current through the Zener diode is:
To get output '1' at R, for the given logic gate circuit the input values must be:
The output of the given logic circuit is :
Ge and Si diodes start conducting at 0.3V and 0.7V respectively. In the following figure if Ge diode connection are reversed, the value of V0 changes by:
(assume that the Ge diode has large breakdown voltage)
Mobility of electrons in a semiconductor is defined as the ratio of their drift velocity to the applied electric field. If , for an n-type semiconductor, the density of electrons is 1019 m -3 and their mobility is 1.6 m2 / (V.s) then the resistivity of the semiconductor (since it is an n-type semiconductor contribution of holes is ignored ) is close to :
A 2V battery is connected across AB as shown in the figure. The value of the current supplied by the battery when in one case battery’s positive terminal is connected to A and in other case when positive terminal of battery is connected to B will respectively be :
0.2 A and 0.1 A
0.4 A and 0.2 A
0.1 A and 0.2 A
0.2 A and 0.4 A
The circuit has two oppositely connect ideal diodes in parallel. What is the current following in the circuit?
In the following, which one of the diodes is reverse biased?