A(A + B) =
Question: A(A + B) =
[A].A
A B
AB
AB
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Electronics And Communication Engineering
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A two branch parallel tuned circuit has 100 Ω resistance and 0.1 H inductance in one branch and 10-6 F capacitor in the other. At resonance frequency, the dynamic resistance is
Question: A two branch parallel tuned circuit has 100 Ω resistance and 0.1 H inductance in one branch and 10-6 F capacitor in the other. At resonance frequency, the dynamic resistance is
[A].10 Ω [B].
100 Ω [C].
1000 Ω [D].
10000 Ω Answer: Option C
Explanation:
Dynamic resistance =
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A transistor amplifier is operating in class A mode. If a transformer is connected for impedance matching, the efficiency will
Question: A transistor amplifier is operating in class A mode. If a transformer is connected for impedance matching, the efficiency will
[A].increase [B].
decrease [C].
not be affected [D].
increase or decrease Answer: Option A
Explanation:
No answer description available for this question.
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A + AB =
Question: A + AB =
[A].A [B].
A [C].
A + B [D].
A + B Answer: Option C
Explanation:
No answer description available for this question.
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In figure, the magnitude of V
Question: In figure, the magnitude of V
[A].must be more than that of Va [B].
must be more than that of Vb [C].
must be more than that of Va or Vb [D].
can be equal to or less than or more than that of Va or Vb Answer: Option D
Explanation:
V depends on magnitudes and phase angles of Va and Vb.
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A (A + B) =
Question: A (A + B) =
[A].A [B].
B [C].
A [D].
B Answer: Option A
Explanation:
No answer description available for this question.
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In figure, the current I4 is
Question: In figure, the current I4 is
[A].10 ∠0 [B].
5 ∠90° [C].
5 ∠270° [D].
10 ∠90° Answer: Option B
Explanation:
I4 = I1 + I2 + I3
or I4 = 5∠90° + 5∠0 + 5∠180° = 5∠90°.
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If the midband gain of an amplifier is 40 dB, the gain at half power frequency is
Question: If the midband gain of an amplifier is 40 dB, the gain at half power frequency is
[A].37 dB [B].
30 dB [C].
20 dB [D].
13 dB Answer: Option A
Explanation:
Half power frequency is -3 dB frequency.
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Inputs A and B of the given figure are applied to a NAND gate. The output is LOW
Question: Inputs A and B of the given figure are applied to a NAND gate. The output is LOW
[A].from 0 to 6 [B].
from 0 to 2 [C].
from 0 to 1 and 2 to 3 [D].
from 1 to 2 and 3 to 4 Answer: Option C
Explanation:
NAND gate gives Low output if all inputs are High. For other combinations of inputs, output is High.
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Consider the following statements:The bias stability of an emitter-bias amplifier circuit improves by
Question: Consider the following statements:The bias stability of an emitter-bias amplifier circuit improves by
[A].1 and 2 [B].
2 and 3 [C].
3 and 4 [D].
4 and 5 Answer: Option A
Explanation:
No answer description available for this question.