Exercise :: Electronic Devices and Circuits - Section 1
- Electronic Devices and Circuits - Section 1
- Electronic Devices and Circuits - Section 2
- Electronic Devices and Circuits - Section 3
- Electronic Devices and Circuits - Section 4
- Electronic Devices and Circuits - Section 5
- Electronic Devices and Circuits - Section 6
- Electronic Devices and Circuits - Section 7
- Electronic Devices and Circuits - Section 8
- Electronic Devices and Circuits - Section 9
- Electronic Devices and Circuits - Section 10
- Electronic Devices and Circuits - Section 11
- Electronic Devices and Circuits - Section 12
- Electronic Devices and Circuits - Section 13
- Electronic Devices and Circuits - Section 14
- Electronic Devices and Circuits - Section 15
- Electronic Devices and Circuits - Section 16
| 41. | Calculate the stability factor and change in IC from 25°C to 100°C for, β = 50, RB/ RE = 250, ΔIC0 = 19.9 nA for emitter bias configuration. |
|||||||
Answer: Option A Explanation: SICO = (1 + β).
ΔIC = (SICO).ΔICO = 42.53 x 19.9 nA = 0.85 μA. |
51.
= 42.53
| 42. | A periodic voltage has following value for equal time intervals changing suddenly from one value to next... 0, 5, 10, 20, 50, 60, 50, 20, 10, 5, 0, -5, -10 etc. Then rms value of the waveform is |
|||||||
Answer: Option A Explanation:
RMS value = 965 = 31.064 Volt. |
| 43. | Work function of oxide coated cathode is much lower than that of tungsten cathode. |
|||
Answer: Option A Explanation: Therefore emission current from oxide coated cathode is more. |
| 44. | The word enhancement mode is associated with |
|||||||
Answer: Option B Explanation: MOSFET may be depletion mode or enhancement mode. |
| 45. | In which region of a CE bipolar transistor is collector current almost constant? |
|||||||
Answer: Option B Explanation: It is used as amplifier when it operates in this region. |