1
GATE ECE 2007
+2
-0.6
Two series resonant filters are as shown in the figure. Let the $$3$$-dB bandwidth of Filter $$1$$ be $${B_1}$$ and that of Filter $$2$$ be $${B_2}$$. The value of $${B_1}$$/$${B_2}$$ is  A
$$4$$
B
$$1$$
C
$$1/2$$
D
$$1/4$$
2
GATE ECE 2005
+2
-0.6
For the circuit in figure, the phase current $${{\rm I}_1}$$ is A
$${{10\sqrt 3 } \over 2}\angle {90^0}$$ Amps
B
$${{10\sqrt 3 } \over 2}\angle - {90^0}$$ Amps
C
$$5\angle {60^0}$$ Amps
D
$$5\angle - {60^0}$$ Amps
3
GATE ECE 2004
+2
-0.6

Consider the following statements S1 and S2.

S1: The $$\beta$$ of a bipolar transistor reduces if the base width is increased.

S2: The $$\beta$$ of a bipolar transistor increases if the doping concentration in the base in increased

Which one of the following is correct?
A
S1 is FALSE and S2 is TRUE
B
Both S1 and S2 are TRUE
C
S1 is TRUE and S2 is FALSE
D
Both S1 and S2 are FALSE
4
GATE ECE 2004
+2
-0.6
The transfer function $$H\left( s \right) = {{{V_0}\left( s \right)} \over {{V_i}\left( s \right)}}$$ of an R-L-C circuit is given by
$$H\left( s \right) = {{{{10}^6}} \over {{s^2} + 20s + {{10}^6}}}$$

The Quality factor (Q-factore) of this circuit is

A
$$25$$
B
$$50$$
C
$$100$$
D
$$5000$$
GATE ECE Subjects
Network Theory
Control Systems
Electronic Devices and VLSI
Analog Circuits
Digital Circuits
Microprocessors
Signals and Systems
Communications
Electromagnetics
General Aptitude
Engineering Mathematics
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Joint Entrance Examination