Question 1,2 - PN junction, Barrier,Depletion layer,Drift &
Diffusion Current.Biasing & types (English & Punjabi)

Question 3,4 - Half Wave & Full Wave Rectifier
(English & Punjabi)

Question 5 - Types of Diode,Zener Diode

Question 6 - Transistor,construction & working, current relation (English)

Question 7,8,9,10 - CB,CE,CC configuration & characteristics,
CE amplifier and its gain. (English)

Question 11,12 - Transistor as oscillator and switch,
Numericals (English)