Related InterviewSolutions

• The hydroelectric plants in the industry are best suited to ____________(a) closed circuit air cooling(b) hydrogen gas(c) direct water(d) any of the mentionedThis question was posed to me in semester exam.This intriguing question originated from Cooling (Loss Dissipation) topic in division Rating and Loss Dissipation of Electrical Machines
• The iron losses in a saturated three phase alternator is lesser than the non-saturated three phase alternator.(a) True(b) FalseI got this question in class test.My question comes from Cooling (Loss Dissipation) topic in section Rating and Loss Dissipation of Electrical Machines
• A peaky voltage supply is given to the 3 phase power transformer of the connection power system. These results into ____________(a) reduction in iron losses(b) reduction in copper losses(c) increase in iron losses(d) reduction in noiseThe question was asked in an online interview.My doubt stems from Cooling (Loss Dissipation) topic in section Rating and Loss Dissipation of Electrical Machines
• A three phase induction motor is connected to the infinite bus operating at the normal conditions. There occurs an unbalancing in the supply, leading to ____________(a) unequal heating losses(b) stopping of motor(c) increase in lower(d) none of the mentionedThis question was posed to me at a job interview.Asked question is from Cooling (Loss Dissipation) in portion Rating and Loss Dissipation of Electrical Machines
• If one of the phases of the supply breaks down, then the connected three phase induction motor ____________(a) continues to run as a single phase induction motor, provided load does does not increase beyond 57.7%(b) stops operating after few seconds(c) continues to run as single phase induction motor(d) continues to run as two phase induction motorI got this question during an interview.Asked question is from Cooling (Loss Dissipation) in chapter Rating and Loss Dissipation of Electrical Machines
• If one of the phases of RYB supply gets broken, then the temperature rise of the induction motor ____________(a) remains same as before(b) reduces as compared to the normal operating temperature(c) reduces to temperature rise of corresponding single phase induction motor(d) increasesThe question was posed to me in exam.I'd like to ask this question from Cooling (Loss Dissipation) topic in division Rating and Loss Dissipation of Electrical Machines
• For squirrel cage and slip ring induction motor, cooling methods is efficient in ____________(a) squirrel cage induction motor(b) slip ring induction motor(c) both of the motors(d) none of the mentionedI got this question by my college director while I was bunking the class.Origin of the question is Cooling (Loss Dissipation) topic in portion Rating and Loss Dissipation of Electrical Machines
• In dc machine iron losses cause ____________(a) heating in core(b) loss in efficiency(c) rise in temperature of ventilating air(d) all of the mentionedThe question was posed to me during an online exam.My question is from Cooling (Loss Dissipation) in chapter Rating and Loss Dissipation of Electrical Machines
• If two series motors are identically coupled. One is running as motor while other as generator. For this combination, the iron losses and frictional losses are found identical for ____________(a) identical speed and excitation(b) identical speed(c) identical rating and construction(d) none of the mentionedThe question was posed to me by my school teacher while I was bunking the class.Question is from Cooling (Loss Dissipation) in section Rating and Loss Dissipation of Electrical Machines
• For the given traction application using a dc series motor for a starting time ’t’ is applied. If this method is replaced by a series-parallel control, giving 50% time for each series and parallel. The saving in the starting energy of ____________(a) 25%(b) zero(c) 50%(d) 75%I got this question in a job interview.I need to ask this question from Cooling (Loss Dissipation) topic in portion Rating and Loss Dissipation of Electrical Machines