LUMEN METHOD An office has length of 30m, width = 12m and a clear height of 3.5m. Mounting Height = 0.7m - Area to be illuminated to a general lighting is 250 lux using twin lamp 32-watt CFL luminaire. - Each lamp has an initial output of 85 lumen per watt - Maintenance factor is 0.70 and utilization factor is 0.75

Q: About sources, check the correct statement(s). a) A power supply is composed of at least six parts,…

A:

Q: In Contact Type Temperature Sensor, convection method of heat transfer principle is used. Select…

A: in Contact types temperature sensor, convection method of heat transfer principle is used. we need…

Q: 2. A full wave rectifier is using a center tapped step down transformer. The input to the primary of…

A:

Q: For protecting of hands resistant gloves are made up of plastic.

A: Chemical resistant gloves are made of plastic.

Q: Define slew rate with the formula and its unit.

A: Generally slew rate is calculated in analog electronics. Where it is defined as the rate of change…

Q: is required to reduce the error due to c O a. Permanent Magnet O b. Spring O C. Calibration O d.…

A: In instruments or electronic equipments, some errors will result due to offset and drift.

Q: These questions are about electrical conductivity: 1. What are the advantages of four-probe…

A: 1. What are the advantages of four-probe technique vs two-probe technique Both four probe modes and…

Q: Q8. Write down the names of Fabrication steps and explain the lithography process briefly.

A:

Q: Question 6 R1 Vin V. R2 Figure Q6b : Op-Amp Circuit b) How would an inductive load affect rectifier…

A: b) A rectifier is a device which converts the alternating signal to approximate constant signal.…

Q: A half-wave rectifier with a reservoir capacitor is connected to an AC mains supply (220Vrms, 50Hz)…

A: given

Q: Part A- Why negative peaks are eliminated in Half Wave Rectification and how this can be achieved in…

A: Ans.A Negative peaks are eliminated in half wave rectifier due to reverse bias state of diode.…

Q: Explain the role of impurity and dropping mechanism

A: Two types of semiconductors are present, N-type and P-type semiconductors. In P-type semiconductors,…

Q: Briefly explain what happens when a p-type material is brought in contact with an n-type material.

A: We have to explain what happens when a p-type material is brought in contact with an n-typematerial.…

Q: Electric resistance seam welding uses . . electrodes. (a) pointed (b) disc (c) flat (d) domed

A: According to the question we have to find electric resistance seam welding.

Q: Discuss the importance of electrical isolation when interfacing microcontrollers to higher voltage…

A: We need to design an integrated DC motor controller/driver, which will be under microprocessor…

Q: 3. دیا a) Explain using appropriate equations why magnetic field lines are confined to the core of a…

A: (a) magnetic flux flowing through a magnetic circuit is given by the formula,Where,N=number of turns…

Q: Discuss the importance of form factors in motherboard selection and installation.

A: Form factors in motherboards dictate their physical dimensions, layout, and specifications. Crucial…

Q: A laser system with three levels of energy so that the laser occurs between the first and second…

A:

Q: avantajlarındandır) I – Is a solid element (Katı elemanlardır) II– Concumes less energy (Nisbeten…

A: We need to tell about the advantage of LED .

Q: Q2- (A): Draw the thyristor v-i characteristics and define each region of operation. Explain briefly…

A:

Q: What will be the unit of hole mobility

A: The solution is provided in the following section:

Q: How to get Multisim to automatically reorganize circuits?

A: Introduction Modularization and reuse are beneficial not only in software development, but also in…

Q: b/ Answer true or false 1- An electrodynamic device is used to measure frequency and phase angle. 2-…

A: In this question we will write about measuring instrument questions wattmeter and rectifier type…

Q: What is voltage stability?

A: According to question, we need to explain the voltage stability.

Q: a. Define Half Wave and Full wave Bridge Rectifiers. Explain why the efficiency of Full wave Bridge…

A: Half wave Rectifiers:              Half wave rectifier is nothing but a rectifier which rectifies…

Q: What are the components of Electro mechanical Energy meters? and what are their functions?

A: Electro mechanical energy meter -  This Energy Meters are the combination of Mechanical and…

Q: Describe in words how you want to control the electric fields in a capacitor bushing and where we…

A: Definition of Capacitor Bushing: A bushing in which a metallic or non-metallic conductive layer is…

Q: All electronic components are formed from p type and n type materials. What factors determine what…

A: In p-type semiconductors, holes are the majority carriers and electrons are the minority carriers.…

Q: KP Ko-4 P(s) E(s) K,- 5 kp=2 Kp S

A:

Q: Imvesigate and report on the uses of ferromagnetic oxides in magnetic recording tapes

A: Recording tapes have a thin plastic base material and this base have a coating of ferric oxide…

Q: (a) State the types of turbine flow meters and point out the difference between them.

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 3. A three phase bridge rectifier is supplied by 380 Volt line voltage through a Star/delta…

A: Peak value of the supply voltage, Vml=380*2      =537.4V

Q: The Design of Distributors depend on which parameter? A. CURRENT CARRYING CAPACITY B. HIGH POWER…

A: Given To determine the parameter which affects design of distributors

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.