The best frequency response is of_____________coupling?

Related Mcqs:

1. The frequency response of transformer coupling is___________?

   A. Good
   B. Very good
   C. Excellent
   D. Poor

2. In obtaining the frequency response curve of an amplifier, the______________?

   A. Amplifier level output is kept constant
   B. Amplifier frequency is held constant
   C. Generator frequency is held constant
   D. Generator output level is held constant

3. ________________ frequency is not common in low frequency traction system?

   A. 40 Hz
   B. 25 Hz
   C. 16 Hz
   D. non of these

4. In an RC coupled amplifier, the voltage gain over mid-frequency range_____________?

   A. Changes abruptly with frequency
   B. Is constant
   C. Changes uniformly with frequency
   D. None of the above

5. The upper or lower cut off frequency is also called______________frequency?

   A. Resonant
   B. Sideband
   C. 3 db
   D. None of the above

6. For 25 kV single phase system power supply frequency is_______________?

   A. 60 Hz
   B. 50 Hz
   C. 25 Hz
   D. 16 Hz

7. If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion ?

   A. Amplitude
   B. Intermodulation
   C. Frequency
   D. None of the above

8. A series resonant band-pass filter consists of a 2 mH coil, a 0.005 µF capacitor, and a 120 Ω resistor. The winding resistance of the coil is 12 Ω. The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (f0)?

   A. 10.9 V
   B. 1.09 V
   C. 1.1 V
   D. 12 V

9. An RC high-pass filter consists of an 820 Ω resistor. What is the value of C so that Xc is ten times less than Rat an input frequency of 12 kHz?

   A. 81 µF
   B. 161 µF
   C. 0.161 µF
   D. 220 µF

10. The alternating current has frequency of 106 Hz in such a way that time period for completion of cycle is_______________?

    A. 1Hzs
    B. 1.5Hzs
    C. 106sec
    D. 1sec