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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 17
11.
For the BJT shown in figure, β = 50, the value of VCE is:
3.13 V
4.24 V
5.18 V
none
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
An average response rectifier type electronic voltameter has a d.c. voltage of 10 V applied to it. What is the meter reading?
7.1 V
10 V
11.1 V
22.2 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Consider the common emitter amplifier shown below with the following circuit parameters: β = 100, gm = 0.3861 A/V, r0 = ∞ rp = 259 Ω, Rs = 1 kΩ, RB = 93 kΩ, RC = 250 Ω, RL = 1 kW, C1 = ∞ and C2 = 4.7mF.

The lower cut-off frequency due to C2 is
33.9 Hz
27.1 Hz
13.6 Hz
16.9 Hz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Number of fundamental cut-sets of any graph will be
same as the number of twigs
same as the number of tree branches
same as the number of nodes
equal to one
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1 x 1017 cm-3
Depletion width on the n-side = 0.1 μm
Depletion width on the p-side = 1.0 μm
Intrinsic carrier concentration = 1.4 x 1014F. cm-1.
Thermal voltage = 26mV
Permittivity of free space = 8.85 x 10-14F. cm-1.
Dielectric constant of silicon = 12. A built in potential of the junction.
is 0.70V
is 0.76V
is 0.82V
cannot be estimated from the data given
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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