Menu
Home / ECE / Analog Electronics :: Section 4

ECE :: Analog Electronics

Analog Electronics - Section 1
Analog Electronics - Section 2
Analog Electronics - Section 3
Analog Electronics - Section 4
Analog Electronics - Section 5
Analog Electronics - Section 6
Analog Electronics - Section 7
Analog Electronics - Section 8
Analog Electronics - Section 9
Analog Electronics - section-1
Analog Electronics - Section 10
Analog Electronics - Section 11
Analog Electronics - Section 12
Analog Electronics - Section 13
Analog Electronics - Section 14
Analog Electronics - Section 15
Analog Electronics - Section 16
Analog Electronics - Section 17
Analog Electronics - Section 18
Analog Electronics - Section 19
Analog Electronics - Section 20
Analog Electronics - Section 21
Analog Electronics - section-22
Analog Electronics - Section-23

  1. A negative feedback can be of

    2. A.
    2 types
    B.
    3 types
    C.
    4 types
    D.
    only 1 type

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. In a class C power amplifier the input frequency of ac signal is 1 MHz. If tank circuit has C = 1000 pF, the value of L =

    3. A.
    25 μH
    B.
    50 μH
    C.
    100 μH
    D.
    200 μH

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. The Vo of the op-amp circuit shown in the given is

    4. A.
    11 Vi
    B.
    10 Vi
    C.
    Vi
    D.
    zero

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. In calculating output impedance of an amplifier the source is replaced by an open circuit.

    5. A.
    True
    B.
    False

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. For transistor 2 N 338 the manufacturer specifies Pmax = 100 mW at 250°C free air temperature and maximum junction temperature of 125°C. Its thermal resistance is

    6. A.
    10° C/W
    B.
    100° C/W
    C.
    1000° C/W
    D.
    5000° C/W

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. In figure base current is 10 μA and βdc = 100. Then VE =

    7. A.
    5 V
    B.
    10 V
    C.
    15 V
    D.
    20 V

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. It has been found that in a rectifier circuit with RC filter one RC section reduces ripple by 15%. Two RC sections are used in cascade the reduction in ripple would be

    8. A.
    15%
    B.
    30%
    C.
    150%
    D.
    225%

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. An op-amp has

    9. A.
    low input and output impedance
    B.
    low input impedance and high output impedance
    C.
    low output impedance and high input impedance
    D.
    high output impedance and high input impedance

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. In the figure, assume the op-amp is to be ideal. The output Vo if the circuit is

    10. A.
    10 cos (100t)
    B.
    C.
    D.

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. As the ratio Rf/RL increases the efficiency of a rectifier increases.

    11. A.
    True
    B.
    False

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers