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

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

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

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

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

ICEO = (………) ICBO

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

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

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

. IC = β IB + ………..

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

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

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

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

A transistor is a …………… operated device

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

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

. The current IB is …………

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

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

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

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

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

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

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

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

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 …………….

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

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 of a transistor connected in common collector arrangement is ………………

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

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

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

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

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

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

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

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

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

A transistor has …………………

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

IC = αIE + ………….

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?

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

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

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 …………..

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

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

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

. In a transistor ………………..

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

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

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

Beta’s current ratio is ……..

IC = [α / (1 – α )] IB + ………….

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

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

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

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

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

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

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

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

Voltage-divider bias provides ……….

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

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

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

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

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

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

Total emitter current is …………

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

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

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

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

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