A combination of synchronized leading edge and trailing edge modulation has also been used to control a____________?

Related Mcqs:

1. Double edge modulation eliminates certain harmonics when the reference is a__________?

   A. Sine wave B. Square wave C. Triangular wave D. Trapezoidal wave...

2. Unipolar modulation is generally used in____________?

   A. AC – AC converters B. AC – DC converters C. DC – AC converters D. DC – DC converters...

3. In bipolar modulation, the carrier is symmetric about zero with amplitude equal to Cm, the PWM output

   A. Zero B. Switches between – 1 / 2 and + 1 / 2 C. Switches between – 1 and + 1 D. Switches between 0 and + 1...

4. Very large values of modulation index (greater than 3.24) lead to___________?

   A. Square AC output voltage B. Sine AC output voltage C. Triangular AC output voltage D. Trapezoidal AC output voltage...

5. Thyristor is nothing but a____________?

   A. Controlled transistor B. Controlled switch C. Amplifier with higher gain D. Amplifier with large current gain...

6. For an SCR gate – cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance_____?

   A. 111.9 Ω. B. 11.19 Ω. C. 108 Ω. D. 115 Ω...

7. Compared to transistor, _________ have lower on state conduction losses and higher power handling capability?

   A. TRIACs B. Semi conductor diodes C. MOSFETs D. Thyristor...

8. Which following is a two terminal three layer device?

   A. BJT B. Power dioed C. MOSFET D. None of above...

9. LISN is a device used to measure conducted emissions. LISN stands for_____________?

   A. Line integrated stabilization network B. Line impedance stabilization network C. Line integrated stored network D. Laser integrated stabilization networking...

10. With gate open, the maximum anode current at which SCR is turned off from ON condition is called____________?

    A. breakdown voltage B. peak reverse voltage C. holding current D. latching current...