Question 1

Different color LEDs require different forward voltages to operate.

Accepted Answer

A) True 
 B)False  True

Question 2

Reverse leakage current for a zener diode is specified

Accepted Answer

A) at a voltage that is less than the knee voltage 
B) in reverse breakdown 
C) at the knee voltage 
D) none of the above 
A) at a voltage that is less than the knee voltage 
B) in reverse breakdown 
C) at the knee voltage 
D) none of the above A

Question 3

Figure 2
-Refer to Figure 2. This circuit is a

Accepted Answer

A) voltage multiplier 
B) clamper 
C) limiter 
D) regulator 
A) voltage multiplier 
B) clamper 
C) limiter 
D) regulator C

Question 4

Power dissipation in a zener diode is the product of zener voltage and the current in the zener.

Accepted Answer

A) True 
 B)False

Question 5

In an IC regulator, an internal zener diode is used as a

Accepted Answer

A) reference 
B) control element 
C) feedback element 
D) all of the above 
A) reference 
B) control element 
C) feedback element 
D) all of the above

Question 6

LED color is determined primarily by the

Accepted Answer

A) particular semiconductor and impurities added 
B) color of the plastic covering 
C) size of the diode 
D) amount of forward current 
A) particular semiconductor and impurities added 
B) color of the plastic covering 
C) size of the diode 
D) amount of forward current

Question 7

Typically, the VF for an LED is between

Accepted Answer

A) 1.2 V and 3.2 V 
B) 3.2 V and 6.5 V 
C) 0 V and 0.6 V 
D) 0.6 V and 1.2 V 
A) 1.2 V and 3.2 V 
B) 3.2 V and 6.5 V 
C) 0 V and 0.6 V 
D) 0.6 V and 1.2 V

Question 8

Figure 2
-Refer to Figure 2. The maximum positive output voltage is

Accepted Answer

A) +4.0 V 
B) +4.7 V 
C) +8.0 V 
D) +5.4 V 
A) +4.0 V 
B) +4.7 V 
C) +8.0 V 
D) +5.4 V

Question 9

A diode with a negative resistance characteristic is a varactor diode.

Accepted Answer

A) True 
 B)False

Question 10

A 1N4742A has a maximum power rating of 1.0 W at 50 °C. The derating factor is 9.67 mW/°C. If it is operated at 70 °C, the maximum power is

Accepted Answer

A) 0.8 W 
B) 1.1 W 
C) 0.9 W 
D) 1.2 W 
A) 0.8 W 
B) 1.1 W 
C) 0.9 W 
D) 1.2 W

Question 11

Figure 8
-Refer to Figure 8. If the circuit is operating normally, the current in the zener diode is

Accepted Answer

A) 30 mA 
B) 15 mA 
C) 45 mA 
D) 0 mA 
A) 30 mA 
B) 15 mA 
C) 45 mA 
D) 0 mA

Question 12

Figure 5 A solar panel
-Refer to Figure 5. The cells are connected in series to increase

Accepted Answer

A) resistance 
B) both current and voltage 
C) current 
D) voltage 
A) resistance 
B) both current and voltage 
C) current 
D) voltage

Question 13

An OLED produces light by a process called

Accepted Answer

A) avalanche light emission 
B) organic light emission 
C) photonic light emission 
D) electrophosphorescence 
A) avalanche light emission 
B) organic light emission 
C) photonic light emission 
D) electrophosphorescence

Question 14

Zener impedance is defined as

Accepted Answer

A) VZK/IZK 
B) VZM/IZM 
C) OVZ/OIZ 
D) VZ/IZ 
A) VZK/IZK 
B) VZM/IZM 
C) OVZ/OIZ 
D) VZ/IZ

Question 15

Figure 4
-Refer to Figure 4. The symbol for an LED is output voltage will be

Accepted Answer

A) (a) 
B) (b) 
C) (c) 
D) (d) 
A) (a) 
B) (b) 
C) (c) 
D) (d)

Question 16

Figure 1 VS1U1B1Z S1U1B0= 5.1 V at IS1U1B1Z S1U1B0= 49 mA, IS1U1B1ZK S1U1B0= 1 mA, and ZS1U1B1Z S1U1B0= 7 ▲ over the range of current values.
-Refer to Figure 1. Assume a 200 ▲ load resistor is connected across the output and the zener current is 49 mA. What is VIN?

Accepted Answer

A) 14.9 V 
B) 24.7 V 
C) 20.0 V 
D) 12.2 V 
A) 14.9 V 
B) 24.7 V 
C) 20.0 V 
D) 12.2 V

Question 17

Figure 3 Bias curve for a typical varactor diode
-Refer to Fig 3. For the varactor diode shown, the CR between 0.5 V and 10 V is approximately

Accepted Answer

A) 18 
B) 11 
C) 5.9 
D) 1.5 
A) 18 
B) 11 
C) 5.9 
D) 1.5

Question 18

The crystalline solar cell converts sunlight to electricity using the photovoltaic effect.

Accepted Answer

A) True 
 B)False

Question 19

The forward voltage across an LED is considerably less than for a silicon diode.

Accepted Answer

A) True 
 B)False

Question 20

A photodiode can be controlled by light intensity to form a variable

Accepted Answer

A) capacitive device 
B) resistance device 
C) light source 
D) all of the above 
A) capacitive device 
B) resistance device 
C) light source 
D) all of the above

Different color LEDs require different forward voltages to operate.

Reverse leakage current for a zener diode is specified

Figure 2 -Refer to Figure 2. This circuit is a

Power dissipation in a zener diode is the product of zener voltage and the current in the zener.

In an IC regulator, an internal zener diode is used as a

LED color is determined primarily by the

Typically, the VF for an LED is between

Figure 2 -Refer to Figure 2. The maximum positive output voltage is

A diode with a negative resistance characteristic is a varactor diode.

A 1N4742A has a maximum power rating of 1.0 W at 50 °C. The derating factor is 9.67 mW/°C. If it is operated at 70 °C, the maximum power is

Figure 8 -Refer to Figure 8. If the circuit is operating normally, the current in the zener diode is

Figure 5 A solar panel -Refer to Figure 5. The cells are connected in series to increase

An OLED produces light by a process called

Zener impedance is defined as

Figure 4 -Refer to Figure 4. The symbol for an LED is output voltage will be

Figure 1 V_Z= 5.1 V at I_Z= 49 mA, I_ZK= 1 mA, and Z_Z= 7 ▲ over the range of current values. -Refer to Figure 1. Assume a 200 ▲ load resistor is connected across the output and the zener current is 49 mA. What is VIN?

Figure 3 Bias curve for a typical varactor diode -Refer to Fig 3. For the varactor diode shown, the CR between 0.5 V and 10 V is approximately

The crystalline solar cell converts sunlight to electricity using the photovoltaic effect.

The forward voltage across an LED is considerably less than for a silicon diode.

A photodiode can be controlled by light intensity to form a variable

Introduction to Semiconductors

Diodes and Applications

Bipolar Junction Transistors

Transistor Bias Circuits

BJT Amplifiers

BJT Power Amplifiers

Field-Effect Transistors Fets

Fet Amplifiers and Switching Circuits

Amplifier Frequency Response

Thyristors

The Operational Amplifier

Basic Op-Amp Circuits

Special-Purpose Integrated Circuits

Active Filters

Oscillators

Voltage Regulators

Communication Devices and Methods

Filters

Exam 3: Special-Purpose Diodes

Different color LEDs require different forward voltages to operate.

Reverse leakage current for a zener diode is specified

Figure 2 -Refer to Figure 2. This circuit is a

Power dissipation in a zener diode is the product of zener voltage and the current in the zener.

In an IC regulator, an internal zener diode is used as a

LED color is determined primarily by the

Typically, the VF for an LED is between

Figure 2 -Refer to Figure 2. The maximum positive output voltage is

A diode with a negative resistance characteristic is a varactor diode.

A 1N4742A has a maximum power rating of 1.0 W at 50 °C. The derating factor is 9.67 mW/°C. If it is operated at 70 °C, the maximum power is

Figure 8 -Refer to Figure 8. If the circuit is operating normally, the current in the zener diode is

Figure 5 A solar panel -Refer to Figure 5. The cells are connected in series to increase

An OLED produces light by a process called

Zener impedance is defined as

Figure 4 -Refer to Figure 4. The symbol for an LED is output voltage will be

Figure 1 VZ = 5.1 V at IZ = 49 mA, IZK = 1 mA, and ZZ = 7 ▲ over the range of current values. -Refer to Figure 1. Assume a 200 ▲ load resistor is connected across the output and the zener current is 49 mA. What is VIN?

Figure 3 Bias curve for a typical varactor diode -Refer to Fig 3. For the varactor diode shown, the CR between 0.5 V and 10 V is approximately

The crystalline solar cell converts sunlight to electricity using the photovoltaic effect.

The forward voltage across an LED is considerably less than for a silicon diode.

A photodiode can be controlled by light intensity to form a variable

Introduction to Semiconductors

Diodes and Applications

Bipolar Junction Transistors

Transistor Bias Circuits

BJT Amplifiers

BJT Power Amplifiers

Field-Effect Transistors Fets

Fet Amplifiers and Switching Circuits

Amplifier Frequency Response

Thyristors

The Operational Amplifier

Basic Op-Amp Circuits

Special-Purpose Integrated Circuits

Active Filters

Oscillators

Voltage Regulators

Communication Devices and Methods

Filters

Figure 1 V_Z= 5.1 V at I_Z= 49 mA, I_ZK= 1 mA, and Z_Z= 7 ▲ over the range of current values. -Refer to Figure 1. Assume a 200 ▲ load resistor is connected across the output and the zener current is 49 mA. What is VIN?