1
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
2
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%
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.

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
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.

The small-signal gain of the amplifier $${{{V_c}} \over {{V_s}}}$$ is

A
-10
B
-5.3
C
5.3
D
10
EXAM MAP
Medical
NEET