The power demand can be estimated approximately by____________?

Related Mcqs:

1. The power demand can be estimated approximately by___________?

   A. Load survey method
   B. Mathematical method
   C. Statistical method
   D. Economic parameters

2. Thermal voltage VT can be given by____________?

   A. Kq/T
   B. KT/q
   C. qT/K
   D. (K2/q)(T + 1/T – 1)

3. The effects of EMI can be reduced by____________?

   A. Suppressing emissions
   B. Reducing the efficiency of the coupling path
   C. Reducing the susceptibility of the receptor
   D. All of these

4. In a full wave rectifier, the rectification ratio is approximately equal to____________?

   A. 61%
   B. 71%
   C. 81%
   D. 91%

5. Power electronics essentially deals with control of a.c. power at____________?

   A. Frequencies above 20 kHz
   B. Frequencies above 1000 kHz
   C. Frequencies less than 10 Hz
   D. 50 Hz frequency

6. To meet high current demand we use SCRs in______________?

   A. series connection.
   B. parallel connection.
   C. anti parallel connection.
   D. both B and C.

7. Which one is most suitable power device for high frequency (>100 KHz) switching application?

   A. BJT
   B. Power MOSFET
   C. Schottky diode
   D. Microwave transistor

8. Maximum power loss occurs during_________________?

   A. delay time
   B. rise time
   C. spread time
   D. all

9. Which of following is not a power transistor?

   A. IGBTs
   B. COOLMOS
   C. TRIAC
   D. SITS

10. 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