1
GATE ECE 1996
MCQ (Single Correct Answer)
+1
-0.3
An npn transistor has a beta cut-off frequency $${f_\beta }$$ of 1MHz and Common Emitter short circuit low frequency current gain $${\beta _o}$$ of 200. The unity gain frequency $${f_T}$$ and the alpha cut-off frequency $${f_\alpha }$$ respectively are
A
200 MHZ, 201 MHz
B
200 MHZ, 199 MHz
C
199 MHZ, 200 MHz
D
201 MHZ, 200 MHz
2
GATE ECE 1995
Fill in the Blanks
+1
-0
An Amplifier has an open-loop gain of 100 and its lower and upper-cut-off frequency of 100 Hz and 100 kHz respectively, a feedback network with a feedback factor of 0.99 is connected to the amplifier. the lower-and upper-cut-off frequency's are at ............and ............
3
GATE ECE 1995
Fill in the Blanks
+1
-0
An RC-Coupled Amplifier is assumed to have a single-pole low frequency transfer function. The maximum lower-cutoff frequency allowed for the Amplifier to pass 50 Hz square wave with no more than 10% tilt is ______.
4
GATE ECE 1993
MCQ (Single Correct Answer)
+1
-0.3
In a multi-stage RC-Coupled Amplifier the coupling capacitor.
A
limits the low frequency response.
B
limits the high frequency response.
C
does not affect the frequency response.
D
blocks the d.c. components without effecting the frequency response.
GATE ECE Subjects
EXAM MAP