Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

problem 1) Average service illuminance of 300 lux is to be provided on the work plane (0.85m in height) in a classroom of dimensions 20m x 10m x 5m, using 80W, ceiling mounted standard fluorescent lamps. Determine the number and layout of the lamps required. Given: Utilization Factor of 0.5; Maintenance Factor of 0.8; S/Hm ratio = 1.5(max); luminous efficacy of the lamp = 160 lm/W.

problem 2)a) A room measuring 20 m × 10 m × 3 m is to be illuminated to 500 lux using ceiling mounted FTL luminaires of LDL = 2750 lm. Suppose UF = 0.55 and MF = 0.7. Design the lighting scheme if the working plane is at a height of 75 cm from the floor. Show the lamp disposition. Also, find out the initial value of Glare Index for lengthwise direction of view using the following table: 

X              Y                   GI
4H          10H              16.4           
4H          12H              17.2            
6H          10H              17.8        
6H          12H              18.8

b) The front of a building 50m height and 15m wide must be illuminated by flood lighting projectors to a lux level of 200. The building surface is light coloured with brightly lit background during night time. The building surface has lot of projecting features. The flood lighting projectors are poorly maintained. Assume, U.F = 0.4. Lamps available are; Metal halide, 1000 watt, 80lm/w. H.P.S.V, 750watt, 120lm /w.
Suggest a appropriate lighting scheme and comment on the beam spread if the projectors are located 15m away from the building.

problem 3)a) With neat sketches, describe the basic types of lighting arrangement suitable for two-way traffic roads and dual carriage ways.

b) Mention six basic rules for achieving energy efficiency and cost effectiveness in lighting installations. Describe any two.

c) Describe the quality criterion of sports lighting with suitable exs.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M96297

Have any Question? 


Related Questions in Electrical & Electronics

Determine if the filters with the following transfer

Determine if the filters with the following transfer functions are physically realizable. If they are not realizable, explain if and how they can be approximately realized. Be as specific as possible. (c) H(ω)=2πδ(ω)

Calculate the approximate diameter and length of stator

Calculate the approximate diameter and length of stator core, the number of stator slots and the number of conductors for a 20KW,400V,3 phase,4pole,1200rpm,delta connected induction motor. Bav=0.5T, Kw=0.82, ac=26000amp. ...

Consider a bar element as shown in the figure the

Consider a bar element as shown in the figure. The cross-sectional areas are A 1  and A 2  at nodes 1 and 2, respectively, and vary linearly. In addition, the gravitational acceleration is applied along the axial directi ...

Determine the nyquist sampling rate and the nyquist

Determine the Nyquist sampling rate and the Nyquist sampling interval for the signals a. sinc 2 (100πt) b. 0.01 sinc 2 (100πt) c. sinc(100πt) + 3 sinc 2 (60πt) d. sinc(50πt) sinc (100πt)

1 the tank is accelerated upward at a uniform rate does the

1. The tank is accelerated upward at a uniform rate. Does the manometer level go up or down? 2. Glass viewing windows are to be installed in an aquarium. Each window is to be 0.6 m in diameter and to be centered 2 m belo ...

1 discuss the duality between the radiation fields of a

1. Discuss the duality between the radiation fields of a small circular loop antenna with those of a Hertzian dipole at the center of the loop and aligned with its axis. 2. Compare the radiation resistance and directivit ...

1 what is the total distance around the circumference of a

1. What is the total distance around the circumference of a circle of radius 1 m? What is the total vector distance around the circle? 2. What is the total surface area of a cube of sides 1 m? Assuming the normals to the ...

An euler beam element shown in the figure is under a

An Euler beam element shown in the figure is under a uniformly distributed couple, C. Calculate the equivalent nodal forces. Using a simply supported beam under a uniform couple, show that the reaction forces are equal a ...

1 express equation in terms of the flow rate and the pipe

1. Express equation in terms of the flow rate and the pipe diameter. If the pipe diameter is doubled at constant pressure drop, what percentage change will occur in the flow rate? 2. A 40-km-long pipeline delivers petrol ...

1 what is a multiple baseline design and when are such

1. What is a multiple baseline design, and when are such designs typically used? 2. How do researchers analyze the data from single-case experiments? 3. In what areas have single-case experiments been primarily used?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen