A light assembly shop, 15 m long, 9 m wide, and 3 m up to trusses is to be illuminated to a level of 200 lux. The utilization and maintenance factors are respectively 0.9 and 0.8. Make a scale drawing of the plan of the shop and set out the required lighting points, assuming the use of tungsten lamps and dispersive metallic reflectors. You may assume a lamp efficiency of 13 lumen/W, and a spacing height ratio of unity.

A light assembly shop, 15 m long, 9 m wide, and 3 m up to trusses is to be illuminated to a level of 200 lux. The utilization and maintenance factors are respectively 0.9 and 0.8. Make a scale drawing of the plan of the shop and set out the required lighting points, assuming the use of tungsten lamps and dispersive metallic reflectors. You may assume a lamp efficiency of 13 lumen/W, and a spacing height ratio of unity.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.7MCQ: Consider Figure 3.5. Match the following, those on the left to those on the right. (i) Im (a)...

See similar textbooks

Similar questions

I have an LED that I want to slowly dim and bring back to full brightness. To which area on my Arduino would I connect that wire and why? C B E. 111, CORIA O UNO ARDUINO DE LL A V in OC-to any pin in this area because we are "reading" and not "writing" values D-because we need to power the circuit A- this part of the Arduino controls things OC - but only to pins with a "-" in front of them as this voltage can vary Anode Cathode www.
how do we calculate the clearance distance in high voltage ? is clearance and arcing distance the same
Electric Powers System for Nonelectrical Professional can you explain the operation and need for voltage regulators and tap changers
We are running 3 wires and a ground in a RMC to a control panel with a 60 amp circuit breaker disconnect in the control panel. The conduit is run along the ceiling where the ambient air temperature is 100 degrees. The control panel feeds our secondary cooling pump. What size are the ungrounded conductors? All conductors have typeTHHN insulation. A #6 AWG B 600 Kcmil C #8 AWG D #2 AWG What size RMC do we need? A 3" B 3/4" C 1" D 1 1/2"
Identify the installation symbol O Two way One gang switch O Two way Two gang switch O One way Two gang switch O One way One gang switch
How does the Zenerimpedance affect the voltage across the terminals of the device?
1. Bus bars in electrical substation are made of aluminum because it has i Low cost ii. Low Density ii. High Resistivity iv. Low Melting Point 2. is the greatest demand of load on the power station, during a given period. 3. The arc resistance in circuit breakers doesn't depend on i. Length of Arc ii. Degree of Ionization iii. Cross section of the Arc i. Cross section of the Conductor 4. List out any two limitations of fuse. 5. A 2-wire DC ring distributor is 375m long and is fed with 300V at point A. At point B, 200m from A, load of 150A is taken and at point C, 100m in the opposite direction, a load of 100A is taken. If the resistance per 100m of single conductor is 0.03, find: i. Current in each section of distributor iü. Voltage at points B and C ii. Point of minimum potential
Module 10 Section Review 3.0.0.png Additional Resources Electronics Fundamentals: Circuits, Devices, and Applications, Principles of Electric Circuits, Thomas L. Floyd. New York: Prent 3.0.0 Section Review 1. The letter designation SL on an electrical draw- ing indicates a 4. A a. a. limit switch b. low-voltage switch c. load switch d. light switch b. C. d. 2. Existing power lines on an electrical site plan may be indicated by the letter 5. In t safe a. E b. I a. b. 2 С. Р d. V C. 2 d. 2: 3. The specific types of luminaires required in an installation can be found on the a. power plan b. electrical site plan c. schematic diagram d. lighting fixture schedule P Search for anything
ELTE 108, Pra Amprobe Clamp-On Meter (Model RS-3) Handout Lab How many conductors should be in the jaws of the meter when measuring current? 1. a. One conductor of the circuit Two conductors of the circuit Objective: T b. c. All conductors of the circuit d. None of the above y Prep Work:Answ of the scale. The best reading is in a. lower portion b. middle portion c. higher portion d. it does not matter which portion ус 2. m quipment: la GI pli lig all all an If you loop the conductor around the jaws to get a better reading, the actual reading is determined by 3. a. dividing the reading by the number of loops in the jaws b. multiplying the reading by the number of loops in the jaws c. reading the scale directly dig co d. Other: ne Sq Flu 4. Voltage measurements on the Amprobe meter are taken using the jaws. a. True b. False re:Check the the 5. List the scale ranges available for current with the Amprobe clamp meter: hel into 6. List the scale ranges available for voltage with the Amprobe…
leaving a freevway. Current from the opposite side must travel further, weakening the potential on that side. This creates a potent the motor in that direction, causing the motor to spin. O Only the side where the switch is closed forms a cormplete circuit, so the motor must spin in that direction. Answer the questions and submit the photos for questions 2 -9using the circuit from STEP 2. D2 Yellow R1 50 Q R2 50 0 R3 PSB (+ 5 V 100 aLW R4 D1 100 Q Blue SW1 Sw2 Question 2 本

I changed the wire material from copper to aluminum to string refer to the figures below. Can you explain the difference of the three materials?
Can you help me ? Three identically shaped segments of different materials have a voltage of 120 mV applied between their ends. As a result of the voltage, segment A has a current of 2500muA , segment B has a current of 105 μA and segment C has a current of 0.000002 A. The materials are conductor, semi- conductor and insulators as Determined?