subject
Engineering, 25.08.2020 22:01 wasup00

A series motor runs at 1000 r. P.M. When the voltage is 415 V and the current is 30 A. The armature resistance is 0.5Ω and the series field resistance is 0.25 Ω. Determine the resistance to be connected in series to reduce the speed to 800 r. P.M with the same current.

ansver
Answers: 3

Another question on Engineering

question
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
question
Engineering, 04.07.2019 18:10
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
Answers: 3
question
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
question
Engineering, 04.07.2019 18:20
An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid
Answers: 3
You know the right answer?
A series motor runs at 1000 r. P.M. When the voltage is 415 V and the current is 30 A. The armature...
Questions
question
History, 16.08.2021 17:30
question
Chemistry, 16.08.2021 17:30
question
English, 16.08.2021 17:30
Questions on the website: 13722367