ASOC Examinantion Sample Questions for Radio Theory & Practice

Below are the questions from sample question paper available on WPC site for Radio Theory and Practice. Go on and test your knowledge and answer the questions below. The answers to this basic electronics quiz would be publshed later!

1. The transformer works on the principle of
   1. Self Inductance
   2. Mutual Inductance
   3. both a & b
   4. None
      
      
2. The frequency of oscillation of a series RLC resonant circuit is
   1. f=1/2(pie) sqrt(LC)
   2. f=1/(pie) sqrt(LC)
   3. f=2(pie) sqrt (LC)
   4. none
      
      
3. The capacitor is a
   1. passive device
   2. active device
   3. both a & b
   4. none
      
      
4. The frequency of a sinusoida signal v(s)=10sin100t volts is
   1. 100/2pie c/s
   2. 50 c/s
   3. 100 c/s
   4. 100t c/s
      
      
5. The resistance value of an insulator is
   1. Zero
   2. Very High
   3. Less than Unity
   4. None
      
      
6. The conductance is proportional to
   1. Resistance
   2. Inverse of Resistance
   3. Reactance
   4. Inverse of Reactance
      
      
7. The power can be expressed as
   1. V=IR
   2. P=VI
   3. P=IxIxR
   4. both b & c
      
      
8. The law behind electromagnetism is
   1. Newton's law
   2. Kirchoff's law
   3. Faraday's law
   4. Kepler's law
      
      
9. As per Kirchoff's voltage law in a closed circuit
   1. All the branch voltages meeting at a node should be zero
   2. All the branch currents meeting at a node should be zero
   3. The sum of all the voltage drops is equal to applied voltage
   4. none of the above
      
      
10. The impedance of a resonant circuit is
    1. Zero
    2. Equal to resistance
    3. Unity
    4. Equal to reactance
       
       
11. The Bridge rectifier is a
    1. Full-wave type
    2. Half-wave type
    3. both a & b
    4. None of the above
       
       
12. A Diode can be used as
    1. Rectifier
    2. Detector
    3. Switch
    4. All of the above
       
       
13. An Oscillator is based on
    1. Positive feedback
    2. Negative feedback
    3. No feedback
    4. both a & b
       
       
14. The output signal of a CE amplifier will be
    1. 45 deg out of phase
    2. 90 deg out of phase
    3. 180 deg out of phase
    4. 270 deg out of phase
       
       
15. In the process of modulation in communication system
    1. Signal frequency is more than carrier frequency
    2. Signal frequency is less than carrier frequency
    3. Signal frequency will be directly transmitted
    4. Signal frequency equals carrier frequency

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