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Electronics - Bipolar Junction Transistors (BJT)


Exercise

"Act well your part; there all honor lies."
- Alexander Pope
1. 

When transistors are used in digital circuits they usually operate in the:

A. active region
B. breakdown region
C. saturation and cutoff regions
D. linear region

2. 

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

A. minimum current gain
B. intermediate current gain
C. maximum current gain
D. cutoff point

3. 

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

A. 500 mu.gif A
B. 5 mA
C. 50 mA
D. 5 A

4. 

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

A. betaB. theta
C. alphaD. omega

5. 

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

A. open
B. infinite
C. low resistance
D. high resistance




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