1
GATE ECE 1998
Subjective
+5
-0
Find the value of $${R^1}$$ in the circuit of fig. For generating sinusoidal Oscillations. Find the frequency of oscillations. GATE ECE 1998 Analog Circuits - Oscillators Question 1 English
2
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
$${f_T} = {{{g_m}} \over {2\pi \left( {{C_\pi } + {C_\mu }} \right)}}$$
3
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The emitter coupled pair of BJT’s gives a linear transfer relation between the differential output voltage and the differential input voltage Vid only. When the magnitude of Vid is less than '$$\alpha$$' times the thermal voltage, where '$$\alpha$$' is
A
4
B
3
C
2
D
1
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
Compression in PCM refers to relative compression of
A
higher signal amplitudes
B
lower signal amplitudes
C
lower signal frequencies
D
higher signal frequencies