Methods of Determining Depreciation: There is reduction in the value of the equipment and other property of the plant every year due to depreciation. Therefore, a suitable amount (known as…
Factors Governing Selection of Electric Motors: Parallel to the growth of machine tools, an equally rapid progress has been made in the field of electric motors. The electric motors of…
What is Flood Lighting? - Definition and Calculations Flood lighting means flooding of large surfaces with light from powerful projectors. It is employed to serve one or more of the…
Methods of Lighting Calculations: The different methods of lighting calculations are Watts per square metre method. Lumen or light flux method. Point to point or inverse-square law method. 1. Watts…
Fluorescent Tube - Definition, Construction, Working, Merits and Demerits: Fluorescent lighting has a great advantage over other light sources in many applications. The tubes can be obtained in a variety…
Incandescent Lamp - Construction, Working and Advantages: For sometimes the arc lamps were used for general lighting purpose but as the carbon-arc lamps were complicated so these have been superseded…
What is illumination? - Terms used in Illumination Light is the prime factor in the human life as all activities of human beings ultimately depend upon the light. Where there…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 9: 402. Desired illumination level on the working plane depends upon (a) age group of observers. (b) whether the object…