Are the effects of temperature changes on LDs more or less significant than for LEDs?

Are the effects of temperature changes on LDs more or less  significant than for LEDs?
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Why can multimode graded-index fiber 1300-nm systems using LEDs operate over longer distances and at higher bandwidths than 850-nm systems?

Description : Why can multimode graded-index fiber 1300-nm systems using LEDs operate over longer distances and at higher bandwidths than 850-nm systems?

Last Answer : Longer distances and higher bandwidths are possible because fiber material losses and dispersion are significantly reduced at the 1300-nm region.

Which types of LEDs are the preferred optical sources for short-distance, low-data-rate fiber optic systems?

Description : Which types of LEDs are the preferred optical sources for short-distance, low-data-rate fiber optic systems?

Last Answer : SLEDs and ELEDs.

Why are LEDs preferred over laser diodes for low- and moderate-frequency analog applications?

Description : Why are LEDs preferred over laser diodes for low- and moderate-frequency analog applications?

Last Answer : LEDs require less complex circuitry than lasers.

Semiconductor LEDs emit incoherent light. Define incoherent light

Description : Semiconductor LEDs emit incoherent light. Define incoherent light

Last Answer : Light waves that lack a fixed-phase relationship

LEDs operating at 850 nm provide sufficient optical power for short-distance, low-bandwidth multimode systems. List three conditions that prevent the use of LEDs in longer distance, higher bandwidth multimode systems.

Description : LEDs operating at 850 nm provide sufficient optical power for short-distance, low-bandwidth multimode systems. List three conditions that prevent the use of LEDs in longer distance, higher bandwidth multimode systems.

Last Answer : Multimode fiber dispersion, the relatively high fiber attenuation, and the LED's relatively low optical output power.

Do you know any LDS (Mormon) who is into drugs or alcohol ?

Description : Do you know any LDS (Mormon) who is into drugs or alcohol ?

Last Answer : answer:Me. haha Well..I was baptized LDS as a kid but never bought into it. I drink modestly but still enjoy the occasional wee bit o’ the herbal essence, other drugs no. I also drink coffee and smoke the occasional cigarette, mostly with alcohol. haha

Are there any food storage guidelines or calculators online besides the one used by the LDS?

Description : Are there any food storage guidelines or calculators online besides the one used by the LDS?

Last Answer : Most of those are SWAGS ( Scientific Willd Ass Guesses ). It’s not an exact science. Just go with what you think is appropriate and add a margin for error.

What is the full form of LDS ?

Description : What is the full form of LDS ?

Last Answer : LDS Full Version Licentiate In Dental Surgery.

What are employment agencies in the city of Salt Lake that list available LDS jobs?

Description : What are employment agencies in the city of Salt Lake that list available LDS jobs?

Last Answer : If you are looking for an LDS job you should really contact your local church. They may have some church openings or another business owner in the church may have some jobs.

What does the LDS in LDS dating sites stand for?

Description : What does the LDS in LDS dating sites stand for?

Last Answer : The LDS in LDS Dating Sites stands for Latter Day Saints. This is an expression that is used to categorize people of the Mormon religion into a searchable group.

______technology is a set of technologies develpoed by the telephone companies to provide highdata ratetransmission. A) ASL B) DSL C) LDS D) none of the above

Description : ______technology is a set of technologies develpoed by the telephone companies to provide highdata ratetransmission. A) ASL B) DSL C) LDS D) none of the above

Last Answer : DSL

Which kind of lightbulb is more energy efficient / cost efficient to operate for the same amount of light: those twisty spiral florecent bulbs or LEDs?

Description : Which kind of lightbulb is more energy efficient / cost efficient to operate for the same amount of light: those twisty spiral florecent bulbs or LEDs?

Last Answer : LEDs are more energy efficient and last longer

Will UV LEDs work like a UV tube?

Description : Will UV LEDs work like a UV tube?

Last Answer : answer:Ahh too late to edit, I can get 385-405nm ones for super cheap, but I can see some 380nm ones for 67 cents each, woud those be better? I'm having trouble finding what the real ... , found 100 5mm LEDs, 380-385nm wavelength, only 30 bucks! I wonder if that wavelength works well though.

Is my 1993 Miata Too old school for LED's?

Description : Is my 1993 Miata Too old school for LED's?

Last Answer : It maybe the bad contact in the socket is is causing it. check your grounds. The circuit for the brake/running lights maybe causing the cruise control to malfunction. I had a Mitsubishi that ... 4 way flashers on and have the cruise control work ! Think flashing lights equal to malfunction socket.

Why can't I mix and match LEDs wired in parallel?

Description : Why can't I mix and match LEDs wired in parallel?

Last Answer : answer:An LED is a diode. As such it has a forward voltage drop, i.e., when it's conducting current and shining light, there is a small voltage drop from one end to the other. (After all, with ... device & some would shine brighter than others. So it's still best to give each LED its own resistor.

Why can't I mix and match LEDs wired in parallel?

Description : Why can't I mix and match LEDs wired in parallel?

Last Answer : answer:An LED is a diode. As such it has a forward voltage drop, i.e., when it's conducting current and shining light, there is a small voltage drop from one end to the other. (After all, with ... device & some would shine brighter than others. So it's still best to give each LED its own resistor.

Has anyone bought loose LEDs?

Description : Has anyone bought loose LEDs?

Last Answer : What are you buying them for? I’ve bought them before, but I was buying them for an electronics kit type thing.

Where can I find the best deals on LEDs?

Description : Where can I find the best deals on LEDs?

Last Answer : Here!

Tunnel diode is a: a) Power diode b) Has light doping c) Has heavy doping d) Is a reverse recovery diode Ans: C 76.LEDs are fabricated from: a) Silicon b) Germanium c) Si or Ge d) Gallium arsenide

Description : Tunnel diode is a: a) Power diode b) Has light doping c) Has heavy doping d) Is a reverse recovery diode Ans: C 76.LEDs are fabricated from: a) Silicon b) Germanium c) Si or Ge d) Gallium arsenide

Last Answer : Ans: D

What is the lifetime of LEDs? a. 200,000 minutes b. 200,000 hours c. 150,000 minutes d. 150,000 hours

Description : What is the lifetime of LEDs? a. 200,000 minutes b. 200,000 hours c. 150,000 minutes d. 150,000 hours

Last Answer : b. 200,000 hours

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

Why are visible-light LEDs not used for fiber optics? ∙ a. It has high losses ∙ b. It has short wave ∙ c. It has low attenuation ∙ d. It has weak signal

Description : Why are visible-light LEDs not used for fiber optics? ∙ a. It has high losses ∙ b. It has short wave ∙ c. It has low attenuation ∙ d. It has weak signal

Last Answer : ∙ a. It has high losses

What is the typical wavelength of light emitted from epitaxially grown LEDs? ∙ a. 840 nm ∙ b. 490 nm ∙ c. 480 nm ∙ d. 940 nm

Description : What is the typical wavelength of light emitted from epitaxially grown LEDs? ∙ a. 840 nm ∙ b. 490 nm ∙ c. 480 nm ∙ d. 940 nm

Last Answer : ∙ d. 940 nm

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

What is the lifetime of LEDs? ∙ a. 200,000 minutes ∙ b. 200,000 hours ∙ c. 150,000 minutes ∙ d. 150,000 hours

Description : What is the lifetime of LEDs? ∙ a. 200,000 minutes ∙ b. 200,000 hours ∙ c. 150,000 minutes ∙ d. 150,000 hours

Last Answer : a. 200,000 minutes

Both LEDs and ILDs operate correctly with:

Description : Both LEDs and ILDs operate correctly with:

Last Answer : Forward bias

Sir , if there are 9 LEDs connected in series with the 9 volt battery and each led has a forward voltage drop of 1 volt , do i need a resistor in the circuit (in series with led)?

Description : 9 leds each of 1 volt drop is series with 9  volt battery , do we need a resistor?(SMD leds) I have seen some smd leds without resistor !

Last Answer : We connect resistor to limit the current. So, it depends upon the current rating of the LED, which is provided by manufacturer.

Find out number of data lines required to interface 16 LEDs arrange in the 4 x 4 matrix form.

Description : Find out number of data lines required to interface 16 LEDs arrange in the 4 x 4 matrix form.

Last Answer : 4+4=8, eight lines are required for 4x4 matrix of 16 LEDs

The semiconductor used for LEDs emitting in the visible range is

Description : The semiconductor used for LEDs emitting in the visible range is  (a) GaAs (b) GaAlAs (c) GalnAs (d) GaAsP

Last Answer : The semiconductor used for LEDs emitting in the visible range is GaAsP

The power consumption of LEDS may be of the order of

Last Answer : The power consumption of LEDS may be of the order of 5 to 10 milli-amperes.

LEDs normally work on a voltage of

Last Answer : LEDs normally work on a voltage of 1 to 2 V.

What type of bias is used where only moderate changes in ambient temperature are expected?

Description : What type of bias is used where only moderate changes in ambient temperature are expected?

Last Answer : Self-bias.

What term describes a material whose resistance remains relatively constant with changes in temperature?

Description : What term describes a material whose resistance remains relatively constant with changes in temperature?

Last Answer : Zero temperature coefficient.

Which of the following correctly defines the main concept behind Conversion Optimization? a. Rapidly making significant changes to check which one possesses the fastest results b. Making insignificant incremental changes over time to check which one possesses the best results c. Making numerous changes on your website to check the resuld. Frequently changing the website's layout to see if it appeals to more audience t

Description : Which of the following correctly defines the main concept behind Conversion Optimization? a. Rapidly making significant changes to check which one possesses the fastest results b. Making insignificant ... result d. Frequently changing the website's layout to see if it appeals to more audience

Last Answer : b. Making insignificant incremental changes over time to check which one possesses the best results

Joint families are now undergoing significant changes is an example of functional changes.

Description : Joint families are now undergoing significant changes is an example of functional changes.

Last Answer : Correct the underlined word and complete the sentence : Joint families are now undergoing significant changes is an example of functional changes.

Which of the following statement(s) is/are correct concerning the cardiovascular response to shock? a. Changes in cardiac contractile function shift the Frank Starling curve up and down b. Venoconstriction from skeletal muscle is a significant contributor to the restoration of blood volume with shock c. Arterial vasoconstriction affects all vascular beds equally d. The total circulating blood volume is equally split between the arterial and venous system

Description : Which of the following statement(s) is/are correct concerning the cardiovascular response to shock? a. Changes in cardiac contractile function shift the Frank Starling curve up and down b. ... d. The total circulating blood volume is equally split between the arterial and venous system

Last Answer : Answer: a Central in the general cardiovascular response to shock is the action of the heart itself. The principle determinants of cardiac function in the normal heart are the volume of blood ... Blood flow to the skin is sacrificed early, followed by that to the kidneys and splanchnic viscera

In relation to audit planning, the auditor should document the following: a. The overall audit strategy. b. The detailed audit plan. c. Significant changes made during the audit engagement. d. All of the answers

Description : In relation to audit planning, the auditor should document the following: a. The overall audit strategy. b. The detailed audit plan. c. Significant changes made during the audit engagement. d. All of the answers

Last Answer : All of the answers

Operationally significant changes to AIP shall be published in accordance with: a. AIC’s b. AIP Supplements c. AIRAC procedures d. Trigger NOTAMS

Description : Operationally significant changes to AIP shall be published in accordance with: a. AIC’s b. AIP Supplements c. AIRAC procedures d. Trigger NOTAMS

Last Answer : c. AIRAC procedures

Operationally significant changes to AIP shall be published in accordance with: a. AIC’s b. AIP Supplements c. AIRAC procedures d. Trigger NOTAMS

Description : Operationally significant changes to AIP shall be published in accordance with: a. AIC’s b. AIP Supplements c. AIRAC procedures d. Trigger NOTAMS

Last Answer : c. AIRAC procedures

The economic environment for this simulation game will include a. a favorable environment featuring limited growth, high inflation, and reasonable interest rates. b. a favorable environment featuring modest growth, low inflation, and reasonable interest rates. c. a highly variable environment featuring significant changes in growth, inflation, and drastic fluctuations in interest rates. d. a constant environment featuring measurable growth, constant inflation rates, and constant interest rates. e. economic downturn and other surprises.

Description : The economic environment for this simulation game will include a. a favorable environment featuring limited growth, high inflation, and reasonable interest rates. b. a favorable environment featuring ... inflation rates, and constant interest rates. e. economic downturn and other surprises.

Last Answer : b. a favorable environment featuring modest growth, low inflation, and reasonable interest rates.

Which of the following statement(s) is/are true concerning pharmacologic agents used in the treatment of shock? a. The primary difference between dopamine and dobutamine is the absence of significant a adrenergic activity b. The renal and mesenteric vasoconstrictive effects of norepinephrine complicate and sometimes restrict its use c. The apparent paradoxical use of vasodilators, such as nitroprusside, in shock is indicated as a means to augment cardiac function d. Isoproterenol with its potent b-adrenergic effect, is a particularly useful agent in the treatment of all forms of shock

Description : Which of the following statement(s) is/are true concerning pharmacologic agents used in the treatment of shock? a. The primary difference between dopamine and dobutamine is the absence of significant a ... b-adrenergic effect, is a particularly useful agent in the treatment of all forms of shock

Last Answer : Answer: a, b, c Therapeutic adjustments of intravascular volume (preload) and systemic vascular resistance (afterload) form the basis of the treatment strategies for all ... careful constant monitoring of arterial pressure and repeated hemodynamic measurements with a pulmonary artery catheter

Which of the following statements regarding cytokines is incorrect? A. Cytokines act directly on target cells and may potentiate the actions of one another. B. Interleukin 1 (IL-1) is a major proinflammatory mediator with multiple effects, including regulation of skeletal muscle proteolysis in patients with sepsis or significant injury. C. Platelet-activating factor (PAF) is a major cytokine that results in platelet aggregation, bronchoconstriction, and increased vascular permeability. D. Tumor necrosis factor alpha (TNF-a), despite its short plasma half-life, appears to be a principal mediator in the evolution of sepsis and the multiple organ dysfunction syndrome because of its multiple actions and the secondary cascades that it stimulates.

Description : Which of the following statements regarding cytokines is incorrect? A. Cytokines act directly on target cells and may potentiate the actions of one another. B. Interleukin 1 (IL-1) ... organ dysfunction syndrome because of its multiple actions and the secondary cascades that it stimulates.

Last Answer : Answer: C DISCUSSION: Cytokines are soluble peptide molecules that are synthesized and secreted by a number of cell types in response to injury, inflammation, and infection. Cytokines, which ... is thought to play a central role in the stress response, particularly in response to endotoxemia

Therapeutic dose of digoxin in a normal individual has the following effects, except (a) Increase in the speed of myocardial contractility (b) No significant change in cardiac output (c) Relaxation of peripheral vascular bed (d) Increase in the force of myocardial contractility

Description : Therapeutic dose of digoxin in a normal individual has the following effects, except (a) Increase in the speed of myocardial contractility (b) No significant change in cardiac output (c) Relaxation of peripheral vascular bed (d) Increase in the force of myocardial contractility

Last Answer : Ans: C

Mach number is significant in (A) Supersonics, as with projectiles and jet propulsion (B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (C) Simultaneous motion through two fluids where there is a surface of discontinuity, gravity force, and wave making effects, as with ship's hulls (D) All of the above

Description : Mach number is significant in (A) Supersonics, as with projectiles and jet propulsion (B) Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc. (C) Simultaneous motion through ... gravity force, and wave making effects, as with ship's hulls (D) All of the above

Last Answer : Answer: Option A

Which of the following is NOT a significant factor in determining virulence of AA = Actinomyces actinomycetem comitans? A. It effects chemotaxis T B. Produces leukous toxins T C. Destroys collagen t D. It is immuno-suppressive Not significant

Description : Which of the following is NOT a significant factor in determining virulence of AA = Actinomyces actinomycetem comitans? A. It effects chemotaxis T B. Produces leukous toxins T C. Destroys collagen t D. It is immuno-suppressive Not significant

Last Answer : D. It is immuno-suppressive Not significant

What term is used to describe the frequency at which the filter circuit changes from the point of rejecting the unwanted frequencies to the point of passing the desired frequencies?

Description : What term is used to describe the frequency at which the filter circuit changes from the point of rejecting the unwanted frequencies to the point of passing the desired frequencies?

Last Answer : Frequency cutoff (fco).

If a position servo system does not respond to small changes of the input, is the system overdamped or underdamped?

Description : If a position servo system does not respond to small changes of the input, is the system overdamped or underdamped?

Last Answer : Overdamped.

If a wire passes through a connector what portion of the aircraft wire identification number changes?

Description : If a wire passes through a connector what portion of the aircraft wire identification number changes?

Last Answer : Wire segment letter.

A parabolic reflector changes a spherical wavefront to what type of wavefront?

Description : A parabolic reflector changes a spherical wavefront to what type of wavefront?

Last Answer : Plane.

How are source-to-fiber coupling and microbending and macrobending losses affected by changes in core diameter and D?

Description : How are source-to-fiber coupling and microbending and macrobending losses affected by changes in core diameter and D?

Last Answer : Coupling efficiency increases with both core diameter and D, while bending losses increase directly with core diameter and inversely with D.