Assume the valence electrons is removed from a copper atom. The net charge of the atom becomes:

Suppose there is an atom of oxygen, containing eight protons and eight neutrons in the nucleus, and four neutrons are added in the nucleus. The resulting atomic weight is about:

At absolute zero temperature an intrinsic semiconductor has:

As the temperature of a semiconductor is reduced below normal room temperature, the resistivity increases until, at very low temperatures the semiconductor becomes:

An intrinsic semiconductor has some holes in it at room temperature, What causes these holes?

Each atom in a silicon crystal has

As the forward current through a silicon diode increases, the voltage across the diode:

A silicon diode has a saturation current of 5nA at 25 degrees C. What is the saturation current at 88 degrees C?

If a surface leakage current is 4nA for a reverse voltage of 35V, what is the surface leakage current for a reverse voltage of 43V?

Determine the bulk resistance of a diode for a forward voltage of 0.93V at 1 ampere. (Assume Si diode is used)

Which capacitance dominates in the reverse-bias region?

What circuit activity may shift a characteristic curve so that diode operating points are different?

A ___________ consist of a barrier potential and an ideal switch, with the large internal reverse resistance (r'R) refers to:

The purpose of the I layer in a PIN diode is to:

As compared to an ordinary semiconductor diode, a Schottky diode has higher reverse saturation current and lower cut-in voltage due to:

A circuit that removes positive and negative parts of a waveform is called a

For a clamper circuit to operate properly, its RLC time constant should be

Which of the following is NOT one of the four sections of a basic power supply?

If you are checking a 60Hz full-wave bridge rectifier and observe that the output has a 60Hz ripple:

The peak inverse voltage (PIV) across a non-conducting diode in a bridge rectifier equals approximately:

The DC current through each diode in a bridge rectifier equals:

A current surge takes place when a power supply is first turned-on, because:

The ideal DC output voltage of a capacitor filter is equal to:

A filtered full-wave rectifier voltage has a smaller ripple than does a half-wave rectifier voltage for the same load resistance and capacitor values because:

For a load current of 3mA and filter capacitance of 1,800uF, What is the peak-to-peak ripple out of the bridge rectifier if capacitor-input filter is used?

Find the filter capacitor that will provide 2.5% ripple voltage having a load of 120mA, full wave rectifier voltage of 36V DC and 60Hz supply.

In a supply designed to provide high power at low voltage, the best rectifier design would probably be:

Voltage multipliers are circuits best used to produce:

One of the prime dangers to the semiconductor diode is heat, Excessive current generated by heat which eventually destroys a diode is called

The change in output voltage for a given change in input voltage, normally expressed as a percentage, refers to

Which of the following is a characteristic of the Zener diode?

The Zener diode is able to maintain the voltage drop across its terminal constant by continually changing its _____ In response to a change in input voltage.

In the second approximation. the total voltage across the Zener diode is the sum of the breakdown voltage and the voltage across the:

If the load resistance decreases in a Zener regulator, the series current:

Calculate the temperature coefficient in %/°C of a 10-V nominal Zener diode at 25°C if the nominal voltage is 10.2 V at 100 °C.

Switching regulators are more efficient than linear regulators and are particularly useful in ____________ applications.

Eutectic solder has a Tin to Lead ratio of:

At high frequencies, ordinary diodes don't work properly because of:

What is the range of the operating voltage level for LEDs?