Q1. \(Candela/metre^2\) is the unit of which photometric quantity?

Q2. Candela is the unit of___________.

Q3. Which of the following methods of heating is independent of supply frequency?

Q4. The choke in tube light wiring provides

Q5. A 60 W lamp, given a luminous flux of 1500 lumen will have an efficiency of

Q6. The power factor will be leading in case of

Q7. In electrical resistance welding material of electrode should have

Q8. When a resistance elements of a heater gets fused, we remove a portion of it and reconnect it to the same supply, the power drawn by heater will

Q9. Dielectric strength of rubber is

Q10. The power factor of a spot welding machine is expected to be around: