ELECTRONIC PRINCIPLES QUIZ

A transistor has a current gain of 125 and a base current of 30 Ã‚ÂµA. What is the collector current?

3.75 mA

3.2 mA

13 mA

0.05 mA

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following statements is true for the voltages in a series RL circuit?

The voltage always has the same amplitude and phase for every part of the circuit

The total voltage lags the total current by less than 90

The total voltages is equal to the sum of the voltages across the resistance and inductance

None of these

The total voltage is less than the sum of the voltages across the resistance and inductance

TRUE ANSWER : ?
YOUR ANSWER : ?

The saturation point is approximately the same as

lower end of the load line

cutoff point

infinity

None of these

upper end of the load line

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following equations most directly determines the amount of current flowing through a resistor when you know the value of the resistor and the voltage drop across it?

I = ER

None of these

E = I2R

E = PR

I = E/R

TRUE ANSWER : ?
YOUR ANSWER : ?

When the Q point moves along the load line, the voltage increases when the current

Increases

Can be any of above

Decreases

None of these

Stays the same

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The value of a capacitor can be made larger by:

decreasing the area of the plates

increasing the frequency of the applied voltage

increasing the voltage applied to the plates

None of these

increasing the area of the plates

TRUE ANSWER : ?
YOUR ANSWER : ?

The direction of conventional current flow is:

None of these

from left to right

from neutral to positive

from positive to negative

from negative to positive

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the algebraic sum of this series of values:+2, -3, -6,+4?

-3

-6

2

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The equivalent of 1 micro A is:

1000 A

one-millionth of an ampere

10000A

one million amperes

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following statements most accurately describes the nature of inductive reactance?

None of these

Inductive reactance is an opposition to current flow in dc circuits

Inductive reactance is another term for counter emf

Inductive reactance is an opposition to current flow in ac circuits

Inductive reactance is a force that tends to overcome the effects of counter emf

TRUE ANSWER : ?
YOUR ANSWER : ?