Ction of Electric Force
The figure shows a positive charge placed in a uniform
electric...
Physics, 05.05.2020 09:54 chriscook5176
Ction of Electric Force
The figure shows a positive charge placed in a uniform
electric field
Is the force exerted on the +1 C charge directed up or
down?
Answers: 2
Physics, 21.06.2019 22:00
Aroll in a paper machine is powered by a separately excited dc machine. operating point 1 (under load): the roll typically operates at 764 rpm and must provide 301 nm of torque to oppose the load of the paper. the armature voltage is 230v for this operating point operating point 2 (no load): when the load is removed the speed of the roll increases to 900 rpm (the field characteristics are unchanged) la ea dev m (a) calculate the maximum torque (units of nm) that the motor can supply with this applied voltage (b) calculate the value of the armature resistance, ra (in ohms) (c) at operating point 1 (loaded condition), the field current, i, and the total input power (armature field), are measured to be to be 10 a and 28,600 w respectively. use this information to calculate the value of the field resistance, rf (in ohms). (d) (d) at operating point 1 (loaded condition), calculate the motor efficiency. express your answer as a percent to at least 2 significant digits. (d) if the field voltage is reduced by 1/2, calculate the new stall torque (in nm) of the motor (f). if the field voltage is reduced by 1/2, calculate the new no-load speed (in rad/sec)
Answers: 1
Physics, 22.06.2019 05:30
A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?
Answers: 3
Physics, 22.06.2019 06:30
At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid
Answers: 1
Physics, 22.06.2019 08:30
A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?
Answers: 1
Social Studies, 19.01.2020 11:31
Mathematics, 19.01.2020 11:31
Physics, 19.01.2020 11:31
English, 19.01.2020 11:31
Mathematics, 19.01.2020 11:31
Mathematics, 19.01.2020 11:31
Biology, 19.01.2020 11:31
History, 19.01.2020 11:31
Mathematics, 19.01.2020 11:31
Mathematics, 19.01.2020 11:31
Biology, 19.01.2020 11:31
Chemistry, 19.01.2020 11:31