MCQ on Transistors (Multiple Choice Questions and Answers On Transistors)

The input impedance of a transistor connected in …………….. arrangement is the highest

In a transistor, the base current is about ………….. of emitter current

. When a silicon diode is forward biased, VBE for a CE configuration is ……..

The emitter of a transistor is ………………… doped

At the base-emitter junctions of a transistor, one finds ……………

The input impedance of a transistor is ………….

To operate properly, a transistor’s base-emitter junction must be forward biased with reverse bias applied to which junction?

For a CC configuration to operate properly, the collector-base junction should be reverse biased, while forward bias should be applied to …………… junction.

Three different Q points are shown on a dc load line. The upper Q point represents the ………….

Most of the electrons in the base of an NPN transistor flow …………

Voltage-divider bias provides ……….

. In a transistor ………………..

The phase difference between the input and output voltages of a transistor connected in common collector arrangement is ………………

If a 2 mV signal produces a 2 V output, what is the voltage gain?

If a transistor operates at the middle of the dc load line, a decrease in the current gain will move the Q point ………….

The number of depletion layers in a transistor is …………

. A transistor may be used as a switching device or as a ………….

The most commonly used transistor arrangement is …………… arrangement

The input/output relationship of the common-collector and common-base amplifiers is ………..

In a CE configuration, an emitter resistor is used for ……

Total emitter current is …………

The leakage current in CE arrangement is ……………. that in CB arrangement

Often a common-collector will be the last stage before the load; the main function(s) of this stage is to ………….

What is the collector current for a CE configuration with a beta of 100 and a base current of 30 mu.gifA?

The relation between β and α is …………..

In a pnp transistor, the current carriers are ………….

With the positive probe on an NPN base, an ohmmeter reading between the other transistor terminals should be ……

The phase difference between the input and output voltages in a common base arrangement is …………….

In a transistor if β = 100 and collector current is 10 mA, then IE is …………

A transistor is connected in CB mode. If it is not connected in CE mode with same bias voltages, the values of IE, IB and IC will …………..

A heat sink is generally used with a transistor to …………

With low-power transistor packages, the base terminal is usually the ……….

IC = [α / (1 – α )] IB + ………….

In a transistor, signal is transferred from a …………… circuit

As the temperature of a transistor goes up, the base-emitter resistance ……………

The voltage gain in a transistor connected in ………………. arrangement is the highest

Most of the majority carriers from the emitter ………………..

Beta’s current ratio is ……..

The output impedance of a transistor connected in ……………. arrangement is the highest

The phase difference between the input and output voltages of a transistor connected in common emitter arrangement is ………………

With a PNP circuit, the most positive voltage is probably …………

ICEO = (………) ICBO

. IC = β IB + ………..

The most commonly used semiconductor in the manufacture of a transistor is ………….

A collector characteristic curve is a graph showing ………..

. The ends of a load line drawn on a family of curves determine ……

The collector of a transistor is …………. doped

IC = αIE + ………….

In a transistor, collector current is controlled by ………..

The power gain in a transistor connected in ……………. arrangement is the highest

. When transistors are used in digital circuits they usually operate in the ………….

What is the current gain for a common-base configuration where IE = 4.2 mA and IC = 4.0 mA

The base of a transistor is ………….. doped

The value of β for a transistor is generally ………………..

The element that has the biggest size in a transistor is ………………..

The arrow in the symbol of a transistor indicates the direction of ………….

A transistor is a …………… operated device

The Q point on a load line may be used to determine …………

BC 147 transistor indicates that it is made of …………..

In a tansistor, IC = 100 mA and IE = 100.2 mA. The value of β is …………

If VCC = +18 V, voltage-divider resistor R1 is 4.7 komega.gif, and R2 is 1500omega.gif, then the base bias voltage is ……….

. IC = [α / (1 – α )] IB + […….. / (1 – α )]

If the value of α is 0.9, then value of β is ………..

In a npn transistor, ……………. are the minority carriers

The value of α of a transistor is ……….

If an input signal ranges from 20–40 mu.gifA (microamps), with an output signal ranging from .5–1.5 mA (milliamps), what is the ac beta?

A transistor has a mca12_1001a1.gif of 250 and a base current, IB, of 20 mu.gif A. The collector current, IC, equals to …………….

. The current IB is …………

A current ratio of IC/IE is usually less than one and is called …………

The C-B configuration is used to provide which type of gain?

The voltage gain of a transistor connected in common collector arrangement is ………..

The collector-base junction in a transistor has ……………..

. Which is the higher gain provided by a CE configuration?

A transistor has …………………

The output impedance of a transistor is ……………..