engineering recuitment BEL Probationary Engineers Mock Test 2025 Analog Electronics Diodes and Its Applications Zener Diodes
The transistor shunt regulator shown in figure has a regulated output voltage of 10, when the input varies from 20 V to 30 V. The relevant parameters for the zener diode and he transistor are : Vz = 9.5 V, VBE = 0.5 V, β = 99 Neglect the current through RB. Then the maximum power dissipated in the zener diode (Pz) and the transistor (PT) are
1
Pz = 75 mW, PT = 7.9 W
2
Pz = 85 mW, PT = 8.9 W
3
Pz = 95 mW, PT = 9.9 W
4
Pz = 115 mW, PT = 11.9 W