# Basic Electrical Special MCQ Part Four

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Basic Electrical Special MCQ Part Four

1.An ideal voltage source has
a. Zero internal resistance
b. Infinite internal resistance

2.A real voltage source has
a. Zero internal resistance
b. Infinite internal resistance
c. A small internal resistance
d. A large internal resistance

3.If a load resistance is 1k ohm, a stiff voltage source has a resistance of
a. At least 10 ohm
b. Less than 10 ohm
c. More than 100 kohm
d. Less than 100 kohm

4.An ideal current source has
a. Zero internal resistance
b. Infinite internal resistance

5.A real current source has
a. Zero internal resistance
b. Infinite internal resistance
c. A small internal resistance
d. A large internal resistance

6.If a load resistance is 1 kohm, a stiff current source has a resistance of
a. At least 10 ohm
b. Less than 10 ohm
c. More than 100 kohm
d. Less than 100 kohm

7.The Thevenin voltage is the same as the
c. Ideal source voltage
d. Norton voltage

8.The Thevenin resistance is equal in value to the
c. Internal resistance of a Norton circuit

9.To get the Thevenin voltage, you have to
c. Short the voltage source
d. Open the voltage source

10.To get the Norton current, you have to
c. Short the voltage source
d. Open the current source

11.The Norton current is sometimes called the
c. Thevenin current
d. Thevenin voltage

12.An open resistor has
a. Infinite current through it
b. Zero voltage across it
c. Infinite voltage across it
d. Zero current through it

13.A shorted resistor has
a. Infinite current through it
b. Zero voltage across it
c. Infinite voltage across it
d. Zero current through it

14.An ideal voltage source and an internal resistance is an example of the
a. Ideal approximation
b. Second approximation
c. Higher approximation
d. Exact model

15.Treating a connecting wire as a conductor with zero resistance is an example of the
a. Ideal approximation
b. Second approximation
c. Higher approximation
d. Exact model

16.The voltage out of an ideal voltage source
a. Is zero
b. Is constant
c. Depends on the value of load resistance
d. Depends on the internal resistance

17.The current out of an ideal current source
a. Is zero
b. Is constant
c. Depends on the value of load resistance
d. Depends on the internal resistance

18.Thevenin’s theorem replaces a complicated circuit facing a load by an
a. Ideal voltage source and parallel resistor
b. Ideal current source and parallel resistor
c. Ideal voltage source and series resistor
d. Ideal current source and series resistor

19.Norton’s theorem replaces a complicated circuit facing a load by an
a. Ideal voltage source and parallel resistor
b. Ideal current source and parallel resistor
c. Ideal voltage source and series resistor
d. Ideal current source and series resistor