Question 2 Why use dc motors when ac power is delivered on the line? a. dc motors are grandfathered in from a time when dc power was delivered to the customer. b. dc mototrs maintain a higher efficiency while having a wide torque-speed charateristic. c. ac motors are more complicated and challenging to make than dc motors. d. None of the above.
Explain how the DC side power is processed into AC power. Use necessary equations in explaining your answer pay attention to the unfolding circuit and the DC link capacitor
What component in a power supply converts ac line voltage to dc voltage? What component in a power supply converts ac line voltage to dc voltage? Multiple Choice Transformer Rectifier diode O Resistor O Capacitor
part g Q4. Most electronic systems need a dc voltage to work properly. The AC-to-DC power supply system is including a transformer, a rectifier and a capacitor input filter. The AC input voltage is 110 Vrms at 60 Hz. (a) Draw the full wave bridge rectifier circuit with transformer which steps down voltage to safer and lower levels that are more suitable for use with diodes (b) Show how the capacitor input filter connects to the rectifier output in the...
Styles AC Bus Local Loads T: OC Bus PV Generating DC/AC Station Zline Local Power Grid Inverter T1 T2 Figure Q2 In the microgrid in figure Q2, a solar PV station and the local power grid supply a series of local loads The PV generating station is rated at 2 MW and is operating at unity power factor. The PV station internal impedance is purely resistive equal to 50% based on its own rating of 2 MVA. The inverter DC...
Explain the following related to AC-DC power transmission: (i) Need of HVDC power Transmission system (any four points ) (ii) Draw and explain block diagram of conversion of HVDC—LVAC—Load. (iii) Name any two HVDC lines in world with voltage ranges and distance .
What happens if you connect a DC coil of your double-pole double-throw relay to AC power supply with the same voltage rating?
Variable frequency electronic generation of sinusoids first requires the grid AC to be rectified into DC. Next the DC is converted to high f AC by an inverter circuit. The entire process is at 95% efficiency. Below you are required to refresh your understanding of AC to DC rectifiers. Diode rectifiers are non-linear loads so grid power factor and harmonic generation are again a consideration. The total power factor is composed of two parts: the distortion power factor due to...
1. Power supply (ac to dc) design. [10 pts.] Design a full-wave bridge rectifier circuit to deliver 10 volts dc with less than 0.1 volt (peak to peak) ripple into a load drawing up to 10 mA. (a) Choose the appropriate ac input voltage from the transformer secondary assuming the usual voltage drops for silicon diodes. (b) Determine the correct capacitor value to ensure the specified ripple in your calculation (c) What fuse value should you select for the primary...
In a switch-mode DC power supply, why is the rectified DC output converted to HF (high frequency) AC again (figure 8.1)?