Transistor and Semiconductor Quiz

Transistor is a three-lead semiconductor device that acts as an electrically controlled switch.

• TRUE

• FALSE

A small voltage/current applied at transistor's control lead controls a larger current flow through its other two leads.

• TRUE

• FALSE

In a NPN Bipolar Junction Transistor, a small input current and a negative voltage applied at its base allows a large current to flow from collector to emitter.

• TRUE

• FALSE

When a voltage is applied at transistor's base, electrons in the emitter are prevented from passing to the collector side because of the pn junction.

• TRUE

• FALSE

NPN Transistor is normally off.

• TRUE

• FALSE

JFETs require a bias current and are controlled by using only a voltage.

• TRUE

• FALSE

Junction field effect transistors are three lead semiconductor devices which can be used as current amplifiers.

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• FALSE

In n-channel JFET, a positive voltage applied at its gate reduces current flow from drain to source.

• TRUE

• FALSE

In p-channel JFET, a positive voltage applied at its gate reduces current flow from drain to source.

• TRUE

• FALSE

JFETs have very high input impedance and draw little or no input current.

• TRUE

• FALSE