This set of Electric Drives Multiple Choice Questions & Answers (MCQs) focuses on “Solid-State Switching Circuits – DC/AC Conversion”. 1. Inverters are used to convert DC power into variable AC power. a) True b) False 2. Short circuit problem is severe in case of Voltage source inverter. a) True b) False 3. Switches used in … Read more
This set of Electric Drives Multiple Choice Questions & Answers (MCQs) focuses on “Solid-State Switching Circuits – DC/DC Conversion”. 1. Choppers are used to control the DC voltage level. a) True b) False 2. Which one of the following device is uncontrolled? a) SCR b) MOSFET c) Diode d) TRIAC 3. Cuk-converter is better than … Read more
This set of Electric Drives Multiple Choice Questions & Answers focuses on “Solid-State Switching Circuits – Three Phase, Full-Wave, AC/DC Conversion”. 1. For α > 90°, 3-Φ Full wave bridge rectifier acts as a natural commutated inverter. a) True b) False 2. What is the formula for output voltage for 3-Φ Full wave bridge rectifier … Read more
This set of Electric Drives Multiple Choice Questions & Answers (MCQs) focuses on “Solid-State Switching Circuits – Three Phase, Half-Wave, AC/DC Conversion for Resistive Loads”. 1. Calculate the Vo(avg) for the 3-Φ phase Half-wave uncontrolled rectifier if the supply value is 440 V. a) 297.25 V b) 298.15 V c) 298.11 V d) 300.15 V … Read more
This set of Electric Drives MCQs focuses on “State Switching Circuits – Single Phase, Half-Wave, AC/DC Conversion for Inductive Loads With Freewheeling Diode”. 1. Calculate the voltage across the freewheeling diode when the output voltage is 24 V. a) -15 V b) -24 V c) 28 V d) 39 V 2. Calculate the value of … Read more
This set of Electric Drives online test focuses on “State Switching Circuits – Single Phase, Half-Wave, AC/DC Conversion for Inductive Loads Without Freewheeling Diode”. 1. Calculate the value of the conduction angle for R-L load if the value of β and α are 19° and 29°. a) 10° b) 70° c) 30° d) 80° 2. … Read more
This set of Electric Drives Questions and Answers for Aptitude test focuses on “State Switching Circuits – Single Phase, Full-Wave, AC/DC Conversion for Resistive Loads “. 1. Calculate the value of the Input power factor for 1-Φ Full wave bridge rectifier if the firing angle value is 39°. a) .69 b) .59 c) .78 d) … Read more
This set of Electric Drives Multiple Choice Questions & Answers (MCQs) focuses on “State Switching Circuits – Single Phase, Half-Wave, AC/DC Conversion for Resistive Loads”. 1. In Half-wave controlled rectifier calculate the average value of the voltage if the supply is 13sin(25t) and firing angle is 13°. a) 4.08 V b) 4.15 V c) 3.46 … Read more
This set of Electric Drives Questions and Answers for Campus interviews focuses on “Solid-State Devices – di/dt and dv/dt Protection”. 1. Calculate the value of output r.m.s voltage for Single phase Half-bridge inverter if the DC supply is 80 V. a) 40 V b) 20 V c) 10 V d) 60 V 2. High d(i)÷d(t) … Read more
This set of Electric Drives Multiple Choice Questions & Answers (MCQs) focuses on “Solid-State Devices – Power Electronic Devices Ratings”. 1. Which one of the following load is suitable for load commutation in Single phase Half-bridge inverter? a) R-L load b) R-L-C overdamped c) R-L-C underdamped d) L-load 2. R-L-C overdamped loads are generally lagging … Read more
