11. Materials with lots of free electrons are called
Ans: Conductors
12. Electrons in the outer orbit are called……..?
Ans : valences
13. The current in a given circuit is not to exceed 24 A. Which value of fuse is best?
Ans : 24 A
14. What does LED stand for?
Ans : Light Emitting Diode
15. The current requirement of a LED is………?
Ans : Between 3 and 35mA
16. The ratio of the resistance of a 200W, 230V lamp to that of a 100W, 115V lamp will be………?
Ans: 2
17. If one cycle of ac waveform occurs every millisecond, the frequency will be………?
Ans: 1000 Hz
18. The Q- factor of a coil is given by……?
Ans : Reciprocal of its power factor.
19. A battery is a source of……….?
Ans : DC Voltage
20. During charging, the electrolyte of a lead acid cell becomes?
Ans : Diluted.