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# Electronic Principles Online Exam Quiz

Important questions about Electronic Principles. Electronic Principles MCQ questions with answers. Electronic Principles exam questions and answers for students and interviews.

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

Options

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

### 2. The value of a capacitor can be made larger by:

Options

A : increasing the area of the plates

B : decreasing the area of the plates

C : increasing the frequency of the applied voltage

D : increasing the voltage applied to the plates

Options

A : P = I 2 R

B : P = IE

C : P = E 2 /R

D : I = P/E

### 4. Suppose a voltage source has an ideal voltage of 12V and an internal resistance of 0.5W. For what values of load resistance will the voltage source appear stiff?

Options

A : 5 Ohm

B : 50 Ohm or more

C : 100 Ohm

D : 6 Ohm

Options

A : E = PR

B : E = I 2 R

C : I = E/R

D : I = ER

### 6. Voltage is

Options

A : The flow of charged particles through a material

B : The smallest electrically charged particle

C : Trie force that causes electrons to flow

D : The number of free electrons in an atom

### 7. The north pole of a magnet is the one:

Options

A : that has its molecules arranged in a random pattern

B : that would be attracted to the earth's north magnetic pole

C : that would be repelled by the south pole of another magnet

D : that would be attracted to the earth's south magnetic pole

### 8. A resistor has a rated value of 100 ohm and a tolerance of 10%. What is its minimum and maximum allowable resistance value?

Options

A : 90 Ohm - 101 ohm

B : 90 Ohm - 110 ohm

C : 98 Ohm - 100.1 ohm

D : 99 Ohm - 102 ohm

Options

A : 10.738

B : 0.707

C : 1.5

D : 0.575

### 10. What is a negative ion?

Options

A : An atom that contains more electrons than neutrons

B : An atom that contains more protons than neutrons

C : An atom that contains more electrons than protons

D : An atom that contains more protons than electrons

### 1. Which is the most widely used semiconductor?

Options

A : Copper

B : Silicon

C : Germanium

D : All of the above

### 2. Which one of the following statements is true?

Options

A : Power dissipation of a pure inductor decreases with operating frequency

B : Power dissipation of a pure inductor is at a maximum for dc source voltages

C : Power dissipation of a pure inductor increases with operating frequency

D : There is no meaningful relationship between the power dissipation of a pure inductor and its operating frequency

Options

A : 0.24 W

B : 0.625 W

C : 80 W

D : 325 kW

### 4. Current can flow through a normally open push button switch as long as:

Options

A : you are pressing the button

B : you are not pressing the button

C : its contact remain open

D : its contact remain open

Options

A : 1750 mA

B : 17.5 mA

C : 175 mA

D : 1.75 mA

### 6. An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?

Options

A : Doping

B : Valence electrons

C : Free electrons

D : Thermal energy

### 7. When operating above its resonant frequency, a parallel RLC circuit has the characteristics of a:

Options

A : parallel RL circuit

B : parallel RC circuit

C : parallel RLC circuit operated above its resonant frequency

D : purely resistive circuit

Options

A : 15 V

B : 16 V

C : 7.5 V

D : 8 V

Options

A : 28.4 mA

B : 24.2 mA

C : 34.4 mA

D : 68.4 mA

### 10. Doubling the operating frequency of a purely capacitive circuit:

Options

A : has no effect on the total circuit current

B : doubles the amount of total current

C : cuts the total current by one-half

D : thrice the amount of total current

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