1
GATE ECE 2007
+2
-0.6
In a transconductance amplifier , it is desirable to have
A
a large input resistance and large output resistance
B
a large input resistance and a small output resistance
C
a small input resistance and a large output resistance
D
a small input resistance and a small output resistance
2
GATE ECE 2007
+2
-0.6
For the BJT circuit shown, assume that the $$\beta$$ of the transistor is very large and VBE = 0.7 V. The mode of operation of the BJT is
A
cut-off
B
saturation
C
normal active
D
reverse active
3
GATE ECE 2006
+2
-0.6
In the transistor amplifier circuit shown in the figure below, the transistor has the following parameters: $${\beta _{DC}}$$ = 60, $${V_{BE}}$$ = 0.7V, $${h_{ie}} \to \,\,\infty$$, $${h_{fe}} \to \,\,\infty$$. The capacitance CC can be assumed to be infinite.

If $${\beta _{DC}}$$ is increased by 10%, the collector-to emitter voltage drop

A
increase by less than (or) equal to 10%
B
decreases by less than (or) equal to 10%
C
increases by more than 10%
D
decreases by more than 10%
4
GATE ECE 2006
+2
-0.6
In the transistor amplifier circuit shown in the figure below, the transistor has the following parameters: $${\beta _{DC}}$$ = 60, $${V_{BE}}$$ = 0.7V, $${h_{ie}} \to \,\,\infty$$, $${h_{fe}} \to \,\,\infty$$. The capacitance CC can be assumed to be infinite.

Under the DC conditions, the collector-to emitter voltage drop is

A
4.8 Volts
B
5.3 Volts
C
6.0 Volts
D
6.6 Volts
EXAM MAP
Medical
NEET