1
GATE ECE 2003
MCQ (Single Correct Answer)
+1
-0.3
Generally, the gain of a transistor Amplifier falls at high frequency due to the
A
Internal Capacitances of the device
B
Coupling Capacitor at the input
C
Skin Effects
D
Coupling Capacitor at the output
2
GATE ECE 2002
MCQ (Single Correct Answer)
+1
-0.3
Three identical RC-Coupled transistor amplifiers are cascaded. If each of the amplifiers has a frequency response as shown in figure, the overall frequency response is as given as GATE ECE 2002 Analog Circuits - Frequency Response Question 12 English
A
GATE ECE 2002 Analog Circuits - Frequency Response Question 12 English Option 1
B
GATE ECE 2002 Analog Circuits - Frequency Response Question 12 English Option 2
C
GATE ECE 2002 Analog Circuits - Frequency Response Question 12 English Option 3
D
GATE ECE 2002 Analog Circuits - Frequency Response Question 12 English Option 4
3
GATE ECE 2000
MCQ (Single Correct Answer)
+1
-0.3
The current gain of a bipolar transistor drops at high frequencies because of
A
Transistor capacitances
B
High current effects in the base
C
Parasitic inductive elements
D
The Early effect
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The $${f_T}$$ of a BJT is related to its $${g_{m,}}\,\,{C_\pi }$$ and $${C_\mu }$$ as follows
A
$${f_T} = {{{C_\pi } + {C_\mu }} \over {{g_m}}}$$
B
$${f_T} = {{2\pi \left( {{C_\pi } + {C_\mu }} \right)} \over {{g_m}}}$$
C
$${f_T} = {{{g_m}} \over {{C_\pi } + C\mu }}$$
D
$${f_T} = {{{g_m}} \over {2\pi \left( {{C_\pi } + {C_\mu }} \right)}}$$
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