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Computer science Practice Questions & Answers

33 vote

The graph of current gain versus collector current indicates that the current gain

Asked on by Guest | Votes 33

The graph of current gain versus collector current indicates that the current gain

A).  varies enormously

B).  is contant

C).  varies slightly

D).  equals the collector current divided by the base current

E).  None of the above

0 vote

Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode

Asked on by Guest | Votes 0

Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode

A).  11 mA

B).  12 mA

C).  10 mA

D).  14 mA

E).  None of the above

0 vote

A diode is in series with 220W. If the voltage across the resister is 4V, what is the current through the diode?

Asked on by Guest | Votes 0

A diode is in series with 220W. If the voltage across the resister is 4V, what is the current through the diode?

A).  55 A

B).  55.86 A

C).  18.2 mA

D).  16.3 mA

E).  None of the above

0 vote

What is the smallest number of polarities required for current flow?

Asked on by Guest | Votes 0

What is the smallest number of polarities required for current flow?

A).  One - a negative terminal

B).  Two - a negative terminal and a positive terminal

C).  Three - negative, positive and neutral terminals

D).  Four - two negative and two positive

E).  None of the above

2 vote

When you pass an array to a method, the method receives ________ .

Asked on by Guest | Votes 2

When you pass an array to a method, the method receives ________ .

A).  A copy of the array.

B).  A copy of the first element.

C).  The reference of the array.

D).  The length of the array.