problem 1: Define the term welding? What is the importance of welding? Categorize the types of welding?
problem 2: State the benefits and drawbacks of welding.
problem 3: Describe about electric welding in detail, describe the methods of electric welding.
a)compare resistance and arc welding.
problem 4: Discuss A.C. and D.C. welding sets.
a) What are the different types of resistance welding and describe about them.
b) What are the different types of arc welding and describe them.
a) describe in brief about different types of Resistance welding.
b) describe in brief about different types of arc welding.
problem 7: What are the different lighting schemes? Describe with relevant diagrams.
problem 8: Define the following:
a) Candle power
b) Luminous flux
d) Lux or Metre candle
f) Mean spherical Candle Power
g) Mean spherical candle Power
h) Reduction Factor
i) Utilization Factor
j) Depreciation Factor
problem 9: Describe the laws of illumination with the help of appropriate diagrams and derive equations.
problem 10: Give construction and working of the given types of lamps:
a) Arc Lamp
b) Neon Lamp
c) Sodium lamps
a) Describe how the determination of mean horizontal luminous intensity and polar curve is made.
b) What is an integrating sphere? Describe its use in illumination engineering.