ATT TEST 11 EXAM
ATT TEST 11 EXAM QUESTIONS AND ANSWERS GRADED A+
What is a motor ANS >> a device that converts electrical
energy into mechanical energy
What is a generator ANS >> a device that converts mechanical
energy into electrical energy
What is an incremental motor ANS >> a motor whose shaft
rotates a specific distance in degrees
What is a continuous motor ANS >> one whose shaft
continuously rotates without interruption when input is applied
What type of generator produces DC volts and uses a
commutator? ANS >> Dynamo
,ATT TEST 11 EXAM
Motors and generators operate on what principle? ANS >>
Electromagnetism
What characteristic describes how fast shaft rotates and is
measured in RPM/RPS? ANS >> Speed
What characteristic is a twisting force that causes shaft to
rotate? ANS >> Torque
How is torque calculated in generators? ANS >> Force X
Distance from centre of shaft
How are torque and speed related? ANS >> Inversely
proportional
What characteristic is a generated voltage that OPPOSES
applied volts? ANS >> Counterelectromotive Force (CEMF)
How is CEMF produced? ANS >> By the rotation of motors
shaft
, ATT TEST 11 EXAM
How is CEMF related to speed and torque? ANS >> CEMF is
proportional to speed and inversely proportional to torque
What are loads? ANS >> items that require motion and are
driven by rotating shaft (motors) and electrical circuits that
require power (generators)
How are loads related to speed? ANS >> Inversely proportional
What characteristic is the amount of work accomplished? ANS
>> power
How is power calculated in motors? ANS >> torque X RPM X K
How is power measured? ANS >> Watts and HP
How is power related to load and speed? ANS >> Proportional
to load and inversely proportional to speed
ATT TEST 11 EXAM QUESTIONS AND ANSWERS GRADED A+
What is a motor ANS >> a device that converts electrical
energy into mechanical energy
What is a generator ANS >> a device that converts mechanical
energy into electrical energy
What is an incremental motor ANS >> a motor whose shaft
rotates a specific distance in degrees
What is a continuous motor ANS >> one whose shaft
continuously rotates without interruption when input is applied
What type of generator produces DC volts and uses a
commutator? ANS >> Dynamo
,ATT TEST 11 EXAM
Motors and generators operate on what principle? ANS >>
Electromagnetism
What characteristic describes how fast shaft rotates and is
measured in RPM/RPS? ANS >> Speed
What characteristic is a twisting force that causes shaft to
rotate? ANS >> Torque
How is torque calculated in generators? ANS >> Force X
Distance from centre of shaft
How are torque and speed related? ANS >> Inversely
proportional
What characteristic is a generated voltage that OPPOSES
applied volts? ANS >> Counterelectromotive Force (CEMF)
How is CEMF produced? ANS >> By the rotation of motors
shaft
, ATT TEST 11 EXAM
How is CEMF related to speed and torque? ANS >> CEMF is
proportional to speed and inversely proportional to torque
What are loads? ANS >> items that require motion and are
driven by rotating shaft (motors) and electrical circuits that
require power (generators)
How are loads related to speed? ANS >> Inversely proportional
What characteristic is the amount of work accomplished? ANS
>> power
How is power calculated in motors? ANS >> torque X RPM X K
How is power measured? ANS >> Watts and HP
How is power related to load and speed? ANS >> Proportional
to load and inversely proportional to speed
