Test: Power Electronics- 6 - Electrical Engineering (EE) MCQ

A single phase full-bridge inverter, connected to 230 V dc source, feeds a resistive load 20 Ω find the average current of each SCR.

A single phase full bridge inverter feeds power to a load of R = 12 Ω and L = 0.04 H from a 400 V dc source. If the inverter operates the frequency of 50 Hz, determine the power delivered to load (in watt) for square wave operation. (Consider first and third harmonic).

A single phase full converter, connected 240 V, 50 Hz source, is feeding a load R = 10 Ω in series with a larger inductance that makes the load current ripple free. For a firing angle 30°, calculated R.M.S value of fundamental current (in A). 

A single phase half bridge inverter is feeding power into a load of resistance 20 Ω, dc input to the inverter is 500V. Then the power factor is_____

A single phase half bridge VSI has load R = 1.8 Ω and DC source voltage 130 – 0 – 130 V. Find the power delivered to the load due to fundamental current.

A single phase full converter feeds power to RLE load. If one of the four SCR gets open circuited due to fault. Find the value of average load current (in A) for firing angle 40°.

A single phase half-bridge inverter, connected to 230 V dc source, feeds a resistive load of 15 Ω.

The Input power factor is