1
GATE ECE 1994
Numerical
+1
-0
A common emitter transistor amplifier has a collector current of 1.0 mA when its base current is 25 $$\mu$$A at the room temperature. It's input resistance is approximately equal to (in K$$\Omega$$) _________ .
Your input ____
2
GATE ECE 1994
Fill in the Blanks
+1
-0
The transit time of a current carriers through the channel of an FET decides its ____________characteristics.
3
GATE ECE 1994
Subjective
+5
-0
In the MOSFET amplifier shown in the fig. below, the transistor has $$\mu \,\, = \,\,50,\,\,{r_d}\,\, = \,\,10\,K\Omega ,\,\,{C_{gs}}\,\, = \,\,5\,\,pF,{C_{gd}}\,\, = \,\,1pF\,\,$$ and $${C_{ds}}\,\, = \,\,2\,pF.$$ Draw a small signal equivalent circuit for the amplifier for midband frequencies and calculate its midband voltage gain. GATE ECE 1994 Analog Circuits - FET and MOSFET Question 12 English
4
GATE ECE 1994
Subjective
+2
-0
Match the following.

GROUP-1
(A) Hartley
(B) Wein-bridge
(C) Crystal

GROUP-2
(1) Low frequency oscillator
(2) High frequency oscillator
(3) Stable frequency oscillator
(4) Relaxation oscillator
(5) Nagative Resistance oscillator

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