Wednesday, October 1, 2014

Basic electronics Multiple Choice Questions: Part-6

Basic electronics Multiple Choice Questions: Part-6

[1] A network designed to pass signals with all frequencies except those between two specified cut-off frequencies is called a
(a) low-pass filter
(b) high-pass filter
(c) band-pass filter
(d) band-stop filter


[2] A low-pass T-connected symmetrical filter section has an inductance of 200mH in each of its series arms and a capacitance of 0.5 μF in its shunt arm. The cut-off frequency of the filter is

(a) 1007 Hz
(b) 251.6 Hz
(c) 711.8 Hz
(d) 177.9 Hz


[3] A low-pass π-connected symmetrical filter section has an inductance of 200mH in its series arm and capacitances of 400 pF in each of its shunt arms. The cut-off frequency of the filter is

(a) 25.16 kHz
(b) 6.29 kHz
(c) 17.79 kHz
(d) 35.59 kHz


[4] A high-pass T-connected symmetrical filter section has capacitances of 400 nF in each of its series arms and an inductance of 200mH in its shunt arm. The cut-off frequency of the filter is

(a) 1592 Hz
(b) 1125 Hz
(c) 281 Hz
(d) 398 Hz


[5] A high-pass π-connected symmetrical filter section has a capacitance of 5000 pF in its series arm and inductances of 500 μH in each of its shunt arms. The cut-off frequency of the filter is

(a) 201.3 kHz
(b) 71.18 kHz
(c) 50.33 kHz
(d) 284.7 kHz


[6] A network designed to pass signals at frequencies above a specified cut-off frequency is called a

(a) low-pass filter
(b) high-pass filter
(c) band-pass filter
(d) band-stop filter


[7] A network designed to pass signals at frequencies below a specified cut-off frequency is called a

(a) low-pass filter
(b) high-pass filter
(c) band-pass filter
(d) band-stop filter


[8] A network designed to pass signals with frequencies between two specified cut-off frequencies is called a

(a) low-pass filter
(b) high-pass filter
(c) band-pass filter
(d) band-stop filter


The following refers to questions 9 and 10.
A filter section is to have a nominal impedance of 620 and a cut-off frequency of 2 MHz.

[9] A low-pass T-connected symmetrical filter section is comprised of
(a) 98.68 μH in each series arm, 128.4 pF in shunt arm
(b) 49.34 μH in each series arm, 256.7 pF in shunt arm
(c) 98.68 μH in each series arm, 256.7 pF in shunt arm
(d) 49.34 μH in each series arm, 128.4 pF in shunt arm


[10] A low-pass π-connected symmetrical filter section is comprised of

(a) 98.68 μH in each series arm, 128.4 pF in shunt arm
(b) 49.34 μH in each series arm, 256.7 pF in shunt arm
(c) 98.68 μH in each series arm, 256.7 pF in shunt arm
(d) 49.34 μH in each series arm, 128.4 pF in shunt arm



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