transistor

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

• high resistance to low resistance

• low resistance to high resistance

• high resistance to high resistance

• low resistance to low resistance

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

• increase the forward current

• decrease the forward current

• compensate for excessive doping

• prevent excessive temperature rise

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

• germanium

• silicon

• carbon

• none of the above

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

• forward bias at all times

• reverse bias at all times

• low resistance

• none of the above

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

• active region

• breakdown region

• saturation and cutoff regions

• linear region

Beta’s current ratio is ……..

• IC/IB

• IC/IE

• IB/IE

• IE/IB

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

• voltage-divider bias

• 0.4 V

• 0.7 V

• emitter voltage

Total emitter current is …………

• IE – IC

• IC + IE

• IB + IC

• IB – IC

Operating point represents …………..

• Values of IC and VCE when signal is applied

• The magnitude of signal

• Zero signal values of IC and VCE

• None of the above

If biasing is not done in an amplifier circuit, it results in ……………

• Decrease in the base current

• Unfaithful amplification

• Excessive collector bias

• None of the above