The current gain of a bipolar transistor drops at high frequencies because of____________?

Analog Electronics 15/02/2021

A. Transistor capacitances
B. High current effects in the base
C. Parasitic inductive elements
D. The early effect

Related Mcqs:

    A dc power supply has no-load voltage of 30v,and a full-load voltage of 25v at full-load current of 1A.Its output resistance & load regulation ,respectively are_____________?
    A. 5 Ω & 20 % B. 25 Ω & 20 % C. 5 Ω & 16.7 % D. 25 Ω & 16.7 %...
    A constant current signal across a parallel RLC circuits gives an o/p of 1.4v at the signal frequency of 3.89KHZ and 4.1KHZ .At the frequency of 4KHZ,the o/p voltage will be___________?
    A. 1 v B. 2v C. 1.4v D. 2.8v...
    An n- channel JFET has IDSS=2mA,and Vp=-4v.Its transconductance gm=in mA/V)for an applied gate to source voltage VGS=-2v is___________?
    A. 0.25 B. 0.5 C. 0.75 D. 1...
    The effective channel length of a MOSFET in a saturation decreases with increase in___________?
    A. Gate voltage B. Drain voltage C. Source voltage D. Body voltage...
    An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed________?
    A. 795mV B. 395mV C. 795 mV D. 39.5mV...

Leave a Reply

Your email address will not be published. Required fields are marked *