Under over voltage condition impedance offered by the voltage clamping device is__________?

Related Mcqs:

1. Under normal operating condition voltage clamping device offers impedance of_________?

   A. high value. B. low value. C. zero value. D. moderate value....

2. Example of a voltage clamping device______________?

   A. fast acting fuse B. snubber circuit C. metal oxide varistor D. aluminium block...

3. In a full bridge VSI, in order to avoid the short circuit across the DC bus and the undefined AC output voltage condition, the modulating technique should ensure that___________?

   A. Top switch of each leg is on at any instant B. Bottom switch of each leg is on at any instant C. Either A. or B. D. None of these...

4. A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is_____?

   A. 0.32 B. 0.67 C. 0.45 D. 0.27...

5. n a phase controlled 3 phase ac voltage controller, the harmonic present is__________?

   A. 2nd B. 3rd C. 5th D. 7th...

6. 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....

7. 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...

8. COOLMOS device can be used in application up to power range of___________?

   A. 1 KVA B. 2 KVA C. 500 VA D. 100 KVA...

9. Which of following is normally ON device?

   A. SIT B. BJT C. TRIAC D. IGBT...

10. TRIAC is a semiconductor power electronic device which contains____________?

    A. Two SCR’s connected in reverse parallel B. Two SCR’s connected in parallel C. Two SCR’s connected in series D. Two BJT’s connected in series...