Advertisements
Advertisements
प्रश्न
For a transistor β =75 and IE = 7.5 mA. The value of α is ______
विकल्प
0.1
0.66
0.75
0.98
उत्तर
For a transistor β =75 and IE = 7.5 mA. The value of α is 0.98.
APPEARS IN
संबंधित प्रश्न
Why are the emitter, the base, and the collector of a BJT doped differently?
Draw the circuit symbol of the PNP transistor.
For a transistor IC = 15 mA, IB = 0.5 mA. What is the current amplification factor?
The output of the following circuit is 1 when the input ABC is
Give the Barkhausen conditions for sustained oscillations.
Explain the current flow in an NPN transistor.
Explain the need for a feedback circuit in a transistor oscillator.
A transistor of α = 0.99 and VBE = 0.7 V is connected in the common-emitter configuration as shown in the figure. If the transistor is in the saturation region, find the value of collector current.
A transistor having α = 0.8 is connected in common emitter configuration. When the base current changes by 6 mA, then the change in collector current is ______.
In switching circuit, transistor is in ON state. Values of IC and IB are 5.2 mA and 10 µA respectively and value of RC is 1 k`Omega`. If Vcc is at 5.5 V, then VCE is ______.
Ve, Vb, and Ve are emitter, base, and collector voltage respectively for npn transistor in CE mode. Amplifier works for the combination of biasing voltage equal to ______.
If `alpha`-current gain of a transistor is 0.98. What is the value of `beta`- current gain of the transistor?
In an npn transistor, the base current is 100 µA and the collector current is 10 mA. The emitter current is ______.
ln switching circuit, transistor is in ON state and values of IC and IB are 4.2 mA and 5 µA respectively and RC= l k`Omega` and RB= 300 k`Omega`. If VBE = 0.5 V, find the value of VBB.
For a common emitter configuration, if 'α' and 'β' have their usual meanings, the correct relationship between 'α' and 'β' is ______.
A transistor when connected in common emitter mode has a ____________.
The current gain `alpha` of a transistor is 0.95. The change in collector current corresponding to a change of 0.4 mA in the base current in a common emitter arrangement is ______.
In transistor amplifier, base-emitter junction is forward biased and collector emitter junction is reverse biased. The current gain is ______.
In common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is ______.
A change of 9.0 mA in the emitter current brings a change of 8.9 mA in the collector current. The value of current gain β will be ______.
In a study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98. The collector current is 3mA, then base current will be approximately ______.
In the common-emitter configuration of a transistor, the current gain is more than 1 because [lb, le, and lc are base, emitter, and collector currents respectively] ______
A conducting wire has length 'L1' and diameter 'd1'. After stretching the same wire length becomes 'L2' and diameter 'd2' The ratio of resistances before and after stretching is ______.
In a p-n-p transistor circuit, the collector current is 10 mA. If 90% of the holes emitted from the emitter reach the collector, ______.
In a CE amplifier, the current gain is 80 and the emitter current is 9 mA. The base current is ______.
Define peak value of alternating signal.
Define α.
