Related InterviewSolutions

• In current commutation, in chopper circuit we use _____________(a) 2 auxiliary thyristors(b) 2 diodes(c) 1 auxiliary thyristor(d) 2 auxiliary thyristors and 2 diodesThe question was asked in quiz.My doubt stems from DC Motor Control Through Choppers in section Motor Control by Static Power Converters of DC Machines
• In voltage commutation, in chopper circuit we use _____________(a) 2 auxiliary thyristors(b) 2 diodes(c) 1 auxiliary thyristor(d) Many diodesThis question was posed to me in final exam.This intriguing question originated from DC Motor Control Through Choppers topic in division Motor Control by Static Power Converters of DC Machines
• Which of the following is not the method of auxiliary commutation?(a) Voltage commutation(b) Resistance commutation(c) Current commutation(d) Load commutationI had been asked this question at a job interview.This interesting question is from DC Motor Control Through Choppers in section Motor Control by Static Power Converters of DC Machines
• What is the formula for step up chopper?(a) V(1-α)(b) V/(1-α)(c) αV(d) v/αI have been asked this question in an online interview.Question is taken from DC Motor Control Through Choppers topic in section Motor Control by Static Power Converters of DC Machines
• How output voltage of chopper can be varied?(a) By using constant frequency system(b) By using variable frequency system(c) By using constant and variable frequency systems(d) By using constant or variable frequency systemsI had been asked this question in an online interview.My question is based upon DC Motor Control Through Choppers topic in portion Motor Control by Static Power Converters of DC Machines
• The average value of chopper output waveform is given by _____________(a) αV(b) V/α(c) α2V(d) V/α2The question was asked during an online interview.This interesting question is from DC Motor Control Through Choppers topic in section Motor Control by Static Power Converters of DC Machines
• Which of the following correctly suits with chopper?(a) Thyristor in series with load(b) Thyristor in parallel with load(c) Thyristor switch in series with load(d) Thyristor switch in parallel with loadThis question was addressed to me in an international level competition.This intriguing question originated from DC Motor Control Through Choppers in portion Motor Control by Static Power Converters of DC Machines
• Which of the following statement is not true regarding to DC chopper?(a) Cheap(b) Fast response(c) Regeneration(d) AC to DC controlThe question was asked during an online interview.Question is from DC Motor Control Through Choppers in portion Motor Control by Static Power Converters of DC Machines
• Which of the following method is employed when regenerative braking is necessary?(a) DC chopper(b) Variable resistor(c) Inverter rectifier(d) Motor-generatorThe question was posed to me by my college professor while I was bunking the class.This interesting question is from DC Motor Control Through Choppers topic in chapter Motor Control by Static Power Converters of DC Machines
• Three phase converters are employed for _______________(a) Large kW motors(b) Small kW motors(c) In all motors(d) Never usedI have been asked this question in quiz.The origin of the question is DC Motor Control Through Converters in division Motor Control by Static Power Converters of DC Machines