Any electrical signal present in a circuit other than the desired signal is known as______________?

Related Mcqs:

1. Gate circuit or triggering circuit of a thyristor is

   A. lower power circuit.
   B. high power circuit.
   C. magnetic circuit.
   D. may be low power or high power circuit

2. In EMC signal, the source delivers maximum power to the input of transmission line when the transmission line input impedance

   A. Is equal to the source resistance
   B. Greater than the source resistance
   C. Smaller than the source resistance
   D. None of these

3. In the SPWM, the modulating signal is___________?

   A. Square
   B. Sinusoidal
   C. Triangular
   D. Saw – tooth

4. The phase angle of gate signal in TRIAC can be shifted by using_____________?

   A. A capacitor
   B. A variable resistor
   C. An inductor
   D. Only (a) and (b)

5. In a 3 phase VSI SPWM to use a single carrier signal and preserve the features of PWM technique, the normalized carrier frequency should be____________?

   A. Multiple of two
   B. Odd multiple of three
   C. Odd multiple of five
   D. Odd multiple of seven

6. Electrical power output in a d.c. generator is equal to____________?

   A. Electrical power developed in armature – copper losses
   B. Mechanical power input – iron and friction losses
   C. Electrical power developed in armature – iron and copper losses
   D. Mechanical power input – iron and friction losses – copper losses

7. For swept frequency measurements, the input impedance of the mismatched transmission line would vary with frequency as the electrical length of the transmission line would

   A. Decrease with frequency
   B. Remains same with change in frequency
   C. Increase with frequency
   D. Either A. or B.

8. Electrical power output in a D.C. generator is equal to_____________?

   A. Electrical power developed in armature – copper losses
   B. Mechanical power input – iron and friction losses
   C. Electrical power developed in armature – iron and copper losses
   D. Mechanical power input – iron and friction losses – copper losses

9. Snubber circuit is used with SCR_________________?

   A. in series
   B. in parallel
   C. either series or parallel
   D. anti parallel

10. Dynamic equalising circuit is useful____________?

    A. To limit di / dt of SCR
    B. To limit dV / dt of SCR
    C. For voltage equalisation
    D. Both B and C