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

An arrangement of two identical hertzian dipoles situated

An arrangement of two identical Hertzian dipoles situated at the origin and oriented along the x- and y-axes, known as the turnstile antenna, is used for receiving circularly polarized signals arriving along the z-axis. ...

For the flow described in problem obtain the differential

For the flow described in Problem, obtain the differential equation of motion if v θ  = f(r; t). Problem:- The device in the schematic diagram below is a viscosity pump. It consists of a rotating drum inside of a station ...

1 in an impulse invariance design show that if has is a

1. In an impulse invariance design, show that if Ha(s) is a transfer function of a stable system, the corresponding H[z] is also a transfer function of a stable system. 2. First-order backward differences provide the tra ...

In the system shown in figure 753 a passive nonlinear

In the system shown in Figure 7.53, a passive nonlinear element having the indicated volt-ampere characteristic is connected to an initially charged line at t = 0. Find the voltage across the nonlinear element immediatel ...

Problem 1 an amplifier is observed to have an output noise

Problem 1: An amplifier is observed to have an output noise rms-voltage of 1.0 μV. If the noise bandwidth is 25 kHz, determine the noise spectral density of the amplifier. Problem 2: A piezeoresistive sensor has a therma ...

For the euler beam element shown in the figure derive the

For the Euler beam element shown in the figure, derive the interpolation functions, N I (ξ), stiffness matrix, k, and nodal force vector, f. Assume that the uniformly distributed load is  f (x) = f. Note that the referen ...

1 derive the weak form of a two-dimensional steady-state

1. Derive the weak form of a two-dimensional, steady-state heat transfer problem. 2. Derive the weak form of a simply supported beam problem.

The maximum pitching moment that is developed by the water

The maximum pitching moment that is developed by the water on a flying boat as it lands is noted as cmax The following are the variables involved in this action: a = angle made by flight path of plane with horizontal, β ...

1 prove that a signal cannot be simultaneously timelimited

1. Prove that a signal cannot be simultaneously timelimited and bandlimited. 2. The signal x(t) = sin(0.7πt) cos(0.5πt) is sampled using Fs = 1 Hz to yield a discretetime signal x[n]. Next, x[n] is filtered using an idea ...

A sketch x omega the amplitude spectrum of a signal x t 3

a. Sketch |X (ω)|, the amplitude spectrum of a signal x (t) = 3 cos 6πt + sin 18πt + 2 cos(28 - ∉)πt, where ∉ is a very small number → 0. Determine the minimum sampling rate required to be able to reconstruct x (t) from ...

  • 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