filament of 200 watts is hung at a height of 10 m above the working plane and give uniform illumination over an area having a diameter of 4 m. Assuming a reflector efficiency of 60%, determine the illumination on the working plane. Efficiency of the lamp is 0.90 watt per candlepower. Show detailed solution.

Q: The charge of an electron is -1.60 x 10 19 C. A current of 3.5 A flows in a wire carried by…

A: Given, Charge of an electron, e=-1.6×10-19 C Current, I=3.5 A

Q: 10. What is a) the frequency and b) peak value of the voltage wave

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Q: . Which electrical quantity is measured in terms of the amount of electrons that continuously flows…

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A: To find the percent registration, we need to compare the expected number of revolutions to the…

Q: 7. A 100 W incandescent lamp has a resistance when cold (lamp extinguished) that is only 1/12 of its…

A: Given: Power, 100 W Voltage, 120 V To find: a) Lamp current b) Cold resistance c) Instantaneous…

Q: What is factor of a cable at 5 degrees celcius when calculating resistance

A: The solution is provided in the following section.

Q: 10. What unit is Inductance is measured in? Faraday Lenz Choke Henry

A: Resistance is measured in ohms Capacitance is measured in farads

Q: 19. What are the ms and peak currents for a 60 W bulb? (The ms voltage is the usual 120 V.) A. 0.71…

A:

Q: In the "current" war the winners were  a) Edison and wstinghouse b) Edison and tesla c)…

A:

Q: What will be the voltage drop across a 5 mH indjctor if 2.5sin(20t) A current flows through it?

A:

Q: 3) An incandescent lamp has an internal resistance of 96 92 and operates at 120 V. a) How much…

A: Note: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question…

Q: H.a. What is the efficacy of a 1,000 W PAR-64 halogen lamp with rated lumens of 19,400? A. 303.1 B.…

A: H .a )  Given  Power = 1000 watt Luminous flux = 19400 lumen

Q: Q9. What is the name of this device that is used to detect charges? さキキキキ magnetron cylinder cone…

A: In this answer we will try to find the right option that is used to detect charges which is depicted…

Q: Attempt Only if you are sure . a 24 V DC voltage source is controlled by a rotational potentiometer.…

A: Given data At θ=0°C, V0°C=24 V At θ=12°C, V12°C=10 V To find out We have to determine the voltage…

Fiber Optics

Fiber optics is a technology used to transmit the facts such as light or pulses with fiber or plastic over long distances. Visual fibers are about the width of a human hair strand and, when tied directly to a fiber-optic cable, can transmit multiple long-distance records and faster in different ways.