Q.1.
Which gas can be filled in GLS lamps?
Q.2.
When a body reflects entire radiation incident on it, then it is known as
Q.3.
Which of the following best represents the Law of Conservation of Energy?
Q.4.
Which of the following decreases within turn decreases the charging rate?
Q.5.
On which of the following factors dies the depreciation or maintenance factor depend?
Q.6.
Which one of the following inorganic refrigerants is often used?
Q.7.
What kind of energy in the sun transforms into electromagnetic energy?
Q.8.
The basic electrical requirement in arc welding is that there should be
Q.9.
What is the total number of cells present in a 12-volt battery?
Q.10.
The flicker effect of fluorescent lamps is more pronounced at
Q.11.
According to the Law of Conservation of Energy, when one form of energy is transformed into another, __________ energy is lost in the process
Q.12.
Which of the following has the highest value of thermal conductivity?
Q.13.
Heat is transferred simultaneously by condition, convection and radiation
Q.14.
The coreless induction furnace uses high-frequency electric supply in order to obtain high
Q.15.
The refrigerants which are first cooled by ________________  refrigerants and then used for cooling purposes are known as _________________ refrigerants.
Q.16.
Which of the following track is electrified
Q.17.
Which of the following lamps is the cheapest for the same wattage?
Q.18.
___________ is a cold cathode lamp.
Q.19.
Which is an example of a single energy transformation?
Q.20.
Ground resistance value for sensitive installations is