8. It is required to produce an illumination of 100 lux in a factory hall 30...

8. It is required to produce an illumination of 100 lux in a factory hall 30 m by 15 m. Assume that the maintenance factor is 0.8, coefficient of utilization is 0.4 and efficiency of lamp is 14 lm/W. Suggest the suitable rating, the number of lamps and their possible arrangement. The sizes of the lamps available are 100, 250, 400 and 500 W.

ANS [40 lamps of 250 W in 5 rows]

Show complete solution

Expert Solution

Here I have assumed mounting height to calculate space/height ratio. This value ranges between 1 and 2.

If we use lamps of other power ratings,

Number of fittings will be increased for lower rating lamps which will not cost will increase.

And if we use lamps of higher rating, space/height ratio is not desirable.

So for 250W lamp. Ratio is 1.2 which desirable.

Manojponduru answered 7 months ago

Suppose you own a factory. You want to determine whether the level of illumination on the...

Suppose you own a factory. You want to determine whether the level of illumination on the assembly line affects worker productivity. One day, you have one group of 5 employees work under very dim lighting, a second group of 5 employees work under a moderate level of light, and a third group of 5 employees work under very bright lights. The mean productivity (number of units assembled) for the low light group was 56; for the moderate light group, 68;...

A new type of 38.0 W lamp is designed to produce the same illumination as a...

A new type of 38.0 W lamp is designed to produce the same illumination as a conventional 53.0 W lamp. How much energy does this lamp save during 370.0 h of use? Answer in units of J. If electrical energy costs $0.080/kW·h, how much money is saved in 370.0 h? Answer in units of $.

Problem 8 is this: Your factory has been offered a contract to produce a part for...

Problem 8 is this: Your factory has been offered a contract to produce a part for a new printer. The contract would be for three years and your cash flows from the contract would be $5 million per year. Your up-front setup costs to be ready to produce the part would be $8 million. Your cost of capital for this contract is 8%. a. What does the NPV rule say you should do? b. If you take the contract, what...

. Suppose you own a factory. You want to determine whether the level of illumination on the assembly...

. Suppose you own a factory. You want to determine whether the level of illumination on the assembly line affects worker productivity. One day, you have one group of 5 employees work under very dim lighting, a second group of 5 employees work under a moderate level of light, and a third group of 5 employees work under very bright lights. The mean productivity (number of units assembled) for the low light group was 56; for the moderate light group, 68; for the bright...

Koh Brothers Limited acquired a factory for $54 million on June 30, 2013, to produce hospital...

Koh Brothers Limited acquired a factory for $54 million on June 30, 2013, to produce hospital machines and equipment. The company estimated the factory has a useful life of 25 years with $2 million in residual value at the end of its useful life. The company adopted a straight-line depreciation method for all its property, plant, and equipment. The factory’s market value appreciated steadily to $60 million at the end of the company’s financial year, December 31, 2013. On June...

Question 1 – Case Study (30%) You are required to produce a written assignment of maximum...

Question 1 – Case Study (30%) You are required to produce a written assignment of maximum 500 words for each section. Each section is 15 marks. (a) The management of your company has requested you to propose two CAD system for the new design project that was recently awarded to the company. Your proposal should be a comparative study and include: - i) CAD software name and developer ii) Hardware and system requirements iii) CAD/CAM features and capabilities iv) Price...

ABC Company's preferred stock is selling for $30 a share. If the required return is 8%,...

ABC Company's preferred stock is selling for $30 a share. If the required return is 8%, what will the dividend be two years from now? please show steps in excel

An 11.0-W energy-efficient fluorescent lightbulb is designed to produce the same illumination as a conventional 40.0-W...

An 11.0-W energy-efficient fluorescent lightbulb is designed to produce the same illumination as a conventional 40.0-W incandescent lightbulb. Assuming a cost of $0.116/kWh for energy from the electric company, how much money does the user of the energy-efficient bulb save during 140 h of use? (Give your answer to the nearest cent.) $

The Rose Hall Resort Ltd. is in the 34% tax bracket with a 15 percent required...

The Rose Hall Resort Ltd. is in the 34% tax bracket with a 15 percent required rate of return (or cost of capital) and is considering a new project. This project involves the acquisition of a portfolio of 4 boutique hotels at a cost of $62,016,176. Use the data below to calculate the project’s: Payback NPV PI IRR Year 1 Year 2 Year 3 Year 4 Year 5v Gross Profit $23,700,000 $30,900,000 $38,100,000 $23,700,000 $16,900,000 Depreciation 4,240,000 4,240,000 4,240,000 ...

Lobo Lighting Corporation currently employs 100 unskilled laborers, 80 factory technicians, 30 skilled machinists, and 40...

Lobo Lighting Corporation currently employs 100 unskilled laborers, 80 factory technicians, 30 skilled machinists, and 40 skilled electricians. Lobo management believes that the marginal product of the last unskilled laborer is 520 lights per week, the marginal product of the last factory technician is 350 lights per week, the marginal product of the last skilled machinist is 420 lights per week, and the marginal product of the last skilled electrician is 375 lights per week. Unskilled laborers earn $400 per...

Question