RECF Electrical Questions and Answers Already Passed

RECF Electrical Questions and Answers Already Passed Which can be added to a circuit to protect against electric shocks GFCI What do two output channels determine in a Quadrature encoder Rotation Not measured by frequency Heat Sensors used in echolocation Ultrasonic An electromagnetic motor has electricity flowing through Windings Which circuit is digital? B A motor on a train converts 60000J of electric into 45000J 15kJ Which is an analog sensor? Line follower In a LIFO system First Which data storage is the smallest USB Which uses a rheostat Potentiometer Electrical resistance is measured in Ohms 60000 to 45000 how efficient is the motor 75% An electric motor turns electrical energy into Mechanical Which method reduces energy loss by the smallest amount Hot water tank jacket What type of sensor outputs on an ON/OFF