McqMate

Q. |
## The base current for a BJT remains constant at 5mA, the collector current changes from 0.2mA to 0.3 mA and beta was changed from 100 to 110, then calculate the value of S. |

A. | 0.01m |

B. | 1m |

C. | 100m |

D. | 25m |

Answer» A. 0.01m | |

Explanation: since the current in the above case, remains constant, therefore stability factor is 0.01 as it is defined as the ratio of change in collector current to change in beta. s=change in collector current/change in beta=0.1ma/10=0.01m. |

2.3k

0

Do you find this helpful?

1

View all MCQs in

Electronic Circuits 1No comments yet

- Increase in collector emitter voltage from 5V to 8V causes increase in collector current from 5mA to 5.3mA. Determine the dynamic output resistance.
- In a Darlington pair, the overall β=15000.β1=100. Calculate the collector current for Q2 given base current for Q1 is 20 μA.
- For a n-p-n transistor, the collector current changed from 0.2mA to 0.22mA resulting a change of base emitter voltage from 0.8v to 0.8005V. What is the value of Stability factor?
- From the given circuit, using silicon BJT, what is the value of the saturation collector current?
- In the given circuit using a silicon BJT, what is the value of saturation collector current?
- In the given situation for n-channel JFET, we get drain-to-source current is 5mA. What is the current when VGS = – 6V?
- For the BJT, β=∞, VBEon=0.7V VCEsat=0.7V. The switch is initially closed. At t=0, it is opened. At which time the BJT leaves the active region?
- Given that IB = 5mA and hfe = 55, find load current.
- In CB configuration, the value of α=0.98A. A voltage drop of 4.9V is obtained across the resistor of 5KΩ when connected in collector circuit. Find the base current.
- Which of the following is the correct relationship between base and emitter current of a BJT?