Photodiodes operate property with ∙ a. Forward bias ∙ b. Reverse bias ∙ c. Neither A or B ∙ d. Either A or B

Photodiodes operate property with
∙ a. Forward bias  
∙ b. Reverse bias  
∙ c. Neither A or B  
∙ d. Either A or B
by

1 Answer

Answer :

∙ b. Reverse bias
by

Related questions

Photodiodes operate properly with ∙ A. forward bias ∙ B. reverse bias ∙ C. neither forward nor reverse bias ∙ D. either forward or reverse bias

Description : Photodiodes operate properly with ∙ A. forward bias ∙ B. reverse bias ∙ C. neither forward nor reverse bias ∙ D. either forward or reverse bias

Last Answer : ∙ B. reverse bias

Both LEDs and ILDs operate correctly with ∙ A. forward bias ∙ B. reverse bias ∙ C. neither forward nor reverse bias ∙ D. either forward or reverse bias

Description : Both LEDs and ILDs operate correctly with ∙ A. forward bias ∙ B. reverse bias ∙ C. neither forward nor reverse bias ∙ D. either forward or reverse bias

Last Answer : A. forward bias

Both LEDs and ILDs operate correctly with ∙ a. Forward bias ∙ b. Reverse bias ∙ c. Neither A or B ∙ d. Either A or B

Description : Both LEDs and ILDs operate correctly with ∙ a. Forward bias ∙ b. Reverse bias ∙ c. Neither A or B ∙ d. Either A or B

Last Answer : a. Forward bias

Photodiodes used as fiber optic directors are ∙ a. Unbiased to generate a voltage same as a solar cell ∙ b. Forward bias ∙ c. Reversed bias ∙ d. Thermoelectrically cooled

Description : Photodiodes used as fiber optic directors are ∙ a. Unbiased to generate a voltage same as a solar cell ∙ b. Forward bias ∙ c. Reversed bias ∙ d. Thermoelectrically cooled

Last Answer : ∙ c. Reversed bias

Photodiodes used as fiber optic directors are a. Unbiased to generate a voltage same as a solar cell b. Forward bias c. Reversed bias d. Thermoelectrically cooled

Description : Photodiodes used as fiber optic directors are a. Unbiased to generate a voltage same as a solar cell b. Forward bias c. Reversed bias d. Thermoelectrically cooled

Last Answer : c. Reversed bias

Fiber optic cables operate at frequencies near ∙ a. 20 MHz ∙ b. 200 MHz ∙ c. 2G Hz ∙ d. 800 THz

Description : Fiber optic cables operate at frequencies near ∙ a. 20 MHz ∙ b. 200 MHz ∙ c. 2G Hz ∙ d. 800 THz

Last Answer : ∙ d. 800 THz

Between silicon and gallium arsenide, which has the greatest index of refraction? ∙ A. Gallium arsenide ∙ B. Neither of silicon nor gallium arsenide ∙ C. Silicon ∙ D. They are equal

Description : Between silicon and gallium arsenide, which has the greatest index of refraction? ∙ A. Gallium arsenide ∙ B. Neither of silicon nor gallium arsenide ∙ C. Silicon ∙ D. They are equal

Last Answer : Gallium arsenide

The speed of light in plastic compared to the speed of light in air is ∙ a. Slower ∙ b. Faster ∙ c. The same ∙ d. Either lower or faster

Description : The speed of light in plastic compared to the speed of light in air is ∙ a. Slower ∙ b. Faster ∙ c. The same ∙ d. Either lower or faster

Last Answer : ∙ a. Slower

Photodiodes operate properly with:

Description : Photodiodes operate properly with:

Last Answer : reverse bias

Junction breakdown occurs: a) With forward bias b) With reverse bias c) Under high temperature condition d) Because of excess heating of the diode

Description : Junction breakdown occurs: a) With forward bias b) With reverse bias c) Under high temperature condition d) Because of excess heating of the diode

Last Answer : Ans: B

In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground

Description : In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground

Last Answer : Answer: A

In the illustration, the large battery and R(L) are in the circuit to ________. EL-0022 A. forward bias the emitter-base B. reverse bias the emitter-base C. forward bias the emitter/collector D. reverse bias the emitter/collector

Description : In the illustration, the large battery and R(L) are in the circuit to ________. EL-0022 A. forward bias the emitter-base B. reverse bias the emitter-base C. forward bias the emitter/collector D. reverse bias the emitter/collector

Last Answer : Answer: D

When using an ohmmeter to test a semiconductor diode, you find a low resistance in both the forward and reverse bias directions. This indicates that the diode has a/an ____________. A. open B. short C. good resistive quality D. good capacitive quality

Description : When using an ohmmeter to test a semiconductor diode, you find a low resistance in both the forward and reverse bias directions. This indicates that the diode has a/an ____________. A. open B. short C. good resistive quality D. good capacitive quality

Last Answer : Answer: B

A device used to avoid the relay destroying the op-amp is A. diode B. LED C. reverse bias diode D. forward biased diode

Description :  A device used to avoid the relay destroying the op-amp is A. diode B. LED C. reverse bias diode D. forward biased diode

Last Answer : reverse bias diode

Depletion region of a junction is formed _________ (a) during the manufacturing process (b) under forward bias (c) under reverse bias (d) when temperature varies

Description : Depletion region of a junction is formed _________ (a) during the manufacturing process (b) under forward bias (c) under reverse bias (d) when temperature varies

Last Answer : (a) during the manufacturing process

Process of conversion low voltage to high voltage is called _______ (a) Rectification (b)forward bias (c) reverse bias (d) amplification

Description : Process of conversion low voltage to high voltage is called _______ (a) Rectification (b)forward bias (c) reverse bias (d) amplification

Last Answer : (d) amplification

Photo diode operates in the _______ condition (a) Forward bias (b) null (c) both a & d (d) reverse bias

Description : Photo diode operates in the _______ condition (a) Forward bias (b) null (c) both a & d (d) reverse bias

Last Answer : (d) reverse bias

Avalanche breakdown in a diode occurs when a. Potential barrier is reduced to zero. b. Forward current exceeds certain value. c. Reverse bias exceeds a certain value. d. None of these

Description : Avalanche breakdown in a diode occurs when a. Potential barrier is reduced to zero. b. Forward current exceeds certain value. c. Reverse bias exceeds a certain value. d. None of these

Last Answer : c. Reverse bias exceeds a certain value.

Define i)P-N junction diode ii) Depletion layer iii)Forward bias iv)Reverse bias of P-N junction diode

Description : Define i)P-N junction diode ii) Depletion layer iii)Forward bias iv)Reverse bias of P-N junction diode

Last Answer : i)P-N junction diode: It is a semiconductor device in which half of its region is P-type and other half is N-type.  ii) Depletion layer: The region where free electrons and free holes are absent ... and negative terminal is connected to p-side of p-n junction diode, it is said to be reverse bias.

What is the difference between forward and reverse bias?

Description : What is the difference between forward and reverse bias?

Last Answer : Forward bias is a PN junction bias which allows current to flow through the junction. Forward bias decreases the resistance of the depletion layer. Reverse bias is a PN junction bias that allows only ... Positive polarity on the n-type material and negative polarity to the p-type material.

It refers to the abrupt of change in refractive index from core to clad ∙ A. step index ∙ B. graded index ∙ C. semi-graded index ∙ D. half step index

Description : It refers to the abrupt of change in refractive index from core to clad ∙ A. step index ∙ B. graded index ∙ C. semi-graded index ∙ D. half step index

Last Answer : ∙ A. step index

The term power budgeting refers to ∙ A. the cost of cable, connectors, equipment and installation ∙ B. the loss of power due to defective components ∙ C. the total power available minus the attenuation losses ∙ D. the comparative costs of fiber and copper installations

Description : The term power budgeting refers to ∙ A. the cost of cable, connectors, equipment and installation ∙ B. the loss of power due to defective components ∙ C. the total power available minus the attenuation losses ∙ D. the comparative costs of fiber and copper installations

Last Answer : C. the total power available minus the attenuation losses

Which type of fiber-optic cable is the most widely used? ∙ A. single-mode step-index ∙ B. multimode step-index ∙ C. single-mode graded index ∙ D. multimode graded index

Description : Which type of fiber-optic cable is the most widely used? ∙ A. single-mode step-index ∙ B. multimode step-index ∙ C. single-mode graded index ∙ D. multimode graded index

Last Answer : B. multimode step-index

Which of the following cables will have the highest launch power capability? ∙ A. 50/125/0.2 ∙ B. 85/125/0.275 ∙ C. 62.5/125/0.275 ∙ D. 100/140/0.3

Description : Which of the following cables will have the highest launch power capability? ∙ A. 50/125/0.2 ∙ B. 85/125/0.275 ∙ C. 62.5/125/0.275 ∙ D. 100/140/0.3

Last Answer : A. 50/125/0.2

Refraction is the ∙ A. bending of light ∙ B. reflection of light waves ∙ C. distortion of light waves ∙ D. diffusion of light waves

Description : Refraction is the ∙ A. bending of light ∙ B. reflection of light waves ∙ C. distortion of light waves ∙ D. diffusion of light waves

Last Answer : A. bending of light

Single-mode step-index cable has a core diameter in the range of ∙ A. 100 to 1000 micrometer ∙ B. 50 to 100 micrometer ∙ C. 2 to 15 micrometer ∙ D. 5 to 20 micrometer

Description : Single-mode step-index cable has a core diameter in the range of ∙ A. 100 to 1000 micrometer ∙ B. 50 to 100 micrometer ∙ C. 2 to 15 micrometer ∙ D. 5 to 20 micrometer

Last Answer : . 2 to 15 micrometer

The wavelength of a visible extends from ∙ A. 0.8 to 1.6 um ∙ B. 400 to 750 nm ∙ C. 200 to 660 nm ∙ D. 700 to 1200 nm

Description : The wavelength of a visible extends from ∙ A. 0.8 to 1.6 um ∙ B. 400 to 750 nm ∙ C. 200 to 660 nm ∙ D. 700 to 1200 nm

Last Answer : B. 400 to 750 nm

Which of the following is not a part of the optical spectrum? ∙ A. infrared ∙ B. ultraviolet ∙ C. visible color ∙ D. x-rays

Description : Which of the following is not a part of the optical spectrum? ∙ A. infrared ∙ B. ultraviolet ∙ C. visible color ∙ D. x-rays

Last Answer : ∙ D. x-rays

The main benefit of light wave communications over microwaves or any other communications media are ∙ A. lower cost ∙ B. better security ∙ C. wider bandwidth ∙ D. freedom from interface

Description : The main benefit of light wave communications over microwaves or any other communications media are ∙ A. lower cost ∙ B. better security ∙ C. wider bandwidth ∙ D. freedom from interface

Last Answer : C. wider bandwidth

EMD is best described by which statement? ∙ A. 70 percent of the core diameter and 70% of the fiber NA should be filled with light. ∙ B. 70 percent of the fiber diameter and 70% of the cone of acceptance should be filled with light. ∙ C. 70 percent of input light should be measured at the output. ∙ D. 70 percent of the unwanted wavelengths should be attenuated by the fiber.

Description : EMD is best described by which statement? ∙ A. 70 percent of the core diameter and 70% of the fiber NA should be filled with light. ∙ B. 70 percent of the fiber diameter and 70% of the ... be measured at the output. ∙ D. 70 percent of the unwanted wavelengths should be attenuated by the fiber.

Last Answer : 70 percent of the core diameter and 70% of the fiber NA should be filled with light.

Which of the following is not a major benefit of a fiber-optic cable? ∙ A. immunity from interference ∙ B. no electrical safety problems ∙ C. excellent data security ∙ D. lower cost

Description : Which of the following is not a major benefit of a fiber-optic cable? ∙ A. immunity from interference ∙ B. no electrical safety problems ∙ C. excellent data security ∙ D. lower cost

Last Answer : ∙ D. lower cost

The speed of light in plastic compared to the speed of light in air is ∙ A. less ∙ B. more ∙ C. the same ∙ D. zero

Description : The speed of light in plastic compared to the speed of light in air is ∙ A. less ∙ B. more ∙ C. the same ∙ D. zero

Last Answer : A. less

The core of fiber-optic cable is surrounded by ∙ A. wire braid shield ∙ B. Keviar ∙ C. cladding ∙ D. plastic insulation

Description : The core of fiber-optic cable is surrounded by ∙ A. wire braid shield ∙ B. Keviar ∙ C. cladding ∙ D. plastic insulation

Last Answer : ∙ C. cladding

The core of a fiber-optic cable is made of ∙ A. air ∙ B. glass ∙ C. diamond ∙ D. quartz

Description : The core of a fiber-optic cable is made of ∙ A. air ∙ B. glass ∙ C. diamond ∙ D. quartz

Last Answer : B. glass

The upper pulse rate and information-carrying capacity of a cable is limited by ∙ A. pulse shortening ∙ B. attenuation ∙ C. light leakage ∙ D. modal dispersion

Description : The upper pulse rate and information-carrying capacity of a cable is limited by ∙ A. pulse shortening ∙ B. attenuation ∙ C. light leakage ∙ D. modal dispersion

Last Answer : D. modal dispersion

The mechanical splice is best suited for ∙ A. quicker installation under ideal condition ∙ B. minimum attenuation losses ∙ C. field service conditions ∙ D. situations in which cost of equipment is not a factor

Description : The mechanical splice is best suited for ∙ A. quicker installation under ideal condition ∙ B. minimum attenuation losses ∙ C. field service conditions ∙ D. situations in which cost of equipment is not a factor

Last Answer : D. situations in which cost of equipment is not a factor

Which cable length has the highest attenuation? ∙ A. 1 km ∙ B. 2 km ∙ C. 95 ft. ∙ D. 500 ft.

Description : Which cable length has the highest attenuation? ∙ A. 1 km ∙ B. 2 km ∙ C. 95 ft. ∙ D. 500 ft.

Last Answer : B. 2 km

Cable attenuation is usually expressed in terms of ∙ A. loss per foot ∙ B. dB/km ∙ C. intensity per mile ∙ D. voltage drop per inch

Description : Cable attenuation is usually expressed in terms of ∙ A. loss per foot ∙ B. dB/km ∙ C. intensity per mile ∙ D. voltage drop per inch

Last Answer : . dB/km

Which of the following is not a common type of fiber-optic cable? ∙ A. single-mode step-index ∙ B. multimode graded-index ∙ C. single-mode graded-index ∙ D. multimode step-index

Description : Which of the following is not a common type of fiber-optic cable? ∙ A. single-mode step-index ∙ B. multimode graded-index ∙ C. single-mode graded-index ∙ D. multimode step-index

Last Answer : . single-mode graded-index

The operation of a fiber-optic cable is based on the principle of ∙ A. refraction ∙ B. reflection ∙ C. dispersion ∙ D. absorption

Description : The operation of a fiber-optic cable is based on the principle of ∙ A. refraction ∙ B. reflection ∙ C. dispersion ∙ D. absorption

Last Answer : A. refraction

Loss comparisons between fusion splices an mechanical splices ∙ A. 1:10 ∙ B. 10:1 ∙ C. 20:1 ∙ D. 1:20

Description : Loss comparisons between fusion splices an mechanical splices ∙ A. 1:10 ∙ B. 10:1 ∙ C. 20:1 ∙ D. 1:20

Last Answer : A. 1:10

Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? ∙ A. less than ∙ B. greater than ∙ C. equal to ∙ D. zero

Description : Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? ∙ A. less than ∙ B. greater than ∙ C. equal to ∙ D. zero

Last Answer : ∙ B. greater than

Type of lasers that are made from semiconductor ph-junctions commonly called ILDs ∙ A. semiconductor lasers ∙ B. liquid lasers ∙ C. plasma lasers ∙ D. gas lasers

Description : Type of lasers that are made from semiconductor ph-junctions commonly called ILDs ∙ A. semiconductor lasers ∙ B. liquid lasers ∙ C. plasma lasers ∙ D. gas lasers

Last Answer : semiconductor lasers

Type of lasers that use solid, cylindrical crystals such as ruby ∙ A. solid lasers ∙ B. ILD ∙ C. gas lasers ∙ D. liquid lasers

Description : Type of lasers that use solid, cylindrical crystals such as ruby ∙ A. solid lasers ∙ B. ILD ∙ C. gas lasers ∙ D. liquid lasers

Last Answer : ∙ A. solid lasers

A popular light wavelength fiber-optic cable is ∙ A. 0.7 micrometer ∙ B. 1.3 micrometer ∙ C. 1.5 micrometer ∙ D. 1.8 micrometer

Description : A popular light wavelength fiber-optic cable is ∙ A. 0.7 micrometer ∙ B. 1.3 micrometer ∙ C. 1.5 micrometer ∙ D. 1.8 micrometer

Last Answer : B. 1.3 micrometer

Type of lasers that use organic dyes enclosed in glass tube for an active medium. ∙ A. liquid lasers ∙ B. plasma lasers ∙ C. neon lasers ∙ D. ruby lasers

Description : Type of lasers that use organic dyes enclosed in glass tube for an active medium. ∙ A. liquid lasers ∙ B. plasma lasers ∙ C. neon lasers ∙ D. ruby lasers

Last Answer : liquid lasers

Type of lasers that uses a mixture of helium and neon enclosed in glass tube. ∙ A. gas lasers ∙ B. solid lasers ∙ C. semiconductor lasers ∙ D. liquid lasers

Description : Type of lasers that uses a mixture of helium and neon enclosed in glass tube. ∙ A. gas lasers ∙ B. solid lasers ∙ C. semiconductor lasers ∙ D. liquid lasers

Last Answer : A. gas lasers

The minimum optical power a light detector can receive and still produce a usable electrical output signal. ∙ A. light responsivity ∙ B. light sensitivity ∙ C. light collectivity ∙ D. illumination

Description : The minimum optical power a light detector can receive and still produce a usable electrical output signal. ∙ A. light responsivity ∙ B. light sensitivity ∙ C. light collectivity ∙ D. illumination

Last Answer : B. light sensitivity

The term responsivity as it applies to a light detector is best described as ∙ A. the time required for the signal to go from 10 to 90 percent of maximum amplitude ∙ B. the ratio of the diode output current to the input optical power ∙ C. the ratio of the input power to output power ∙ D. the ratio of output current to input current

Description : The term responsivity as it applies to a light detector is best described as ∙ A. the time required for the signal to go from 10 to 90 percent of maximum amplitude ∙ B. the ratio of the diode ... . the ratio of the input power to output power ∙ D. the ratio of output current to input current

Last Answer : the ratio of the diode output current to the input optical power