Ncatt - Study guides, Class notes & Summaries

Direct current is defined as - the flow of electrons in one direction throughout a circuit with constant voltage and current Direct current is defined as - the flow of electrons in one direction throughout a circuit with constant voltage and current Faraday's Law - current will flow in a circuit provided there is electrical difference in potential and there is a path for it to flow Faraday's Law - current will flow in a circuit provided there is electrical difference in potential and th...

NCATT AET EXAM ...

51) The interchange of energy between the inductor and capacitor in a tank circuit is called? - The flywheel effect 52) The amplifiers class of operation is determined by? - Amount of forward bias 53) What is the resistance of normally closed contacts when the relay is re-energized? - 0 ohms/short 54) What distinguishes a solenoid from a basic relay? - The plunger (armature) pulled into the coil. 55) What part of a basic relay returns the armature to its de-energized position? - The sprin...

FOD NCATT `TEST 2023...

NCATT Chapt 3 Concepts of AC Exam ...

What is an Ampere (A, amp, amperage)? - Unit of measurement for flow of electrons (electrical current) Unit of measurement for flow of electrons (electrical current) - Ampere (A, amp, amperage) Amperage in mathematical problems is expressed by what letter? - I How many electrons are in a Coulomb? - 6.28 billion-billion (6.28x10^18) 1 Coulomb per second is equivalent to how many amperes? - 1 What is a Battery? - A device that stores chemical energy and makes the energy available in electri...

Capacitance - The amount of electrical charge that can be stored in a capacitor under a given amount of voltage (pressure); causes the current to lead in applied voltage Effective Value - Value of sine-wave AC needed to produce the same amount of heat as the value of the direct current Inductance - Causes voltage to be produced when it is cut or crossed by lines of magnetic flux; causes current to lag the applied voltage Peak Voltage - Voltage measured from zero to the highest number of vo...

Ohm's Law - E=IR Power - P=IE Inductive Reactance (XL) - XL=2*3.14fl Capacitive Reactance (XC) - XC=2*3.14fc Resisters in Series - Rt=R1+R2+R3... Resisters in Parallel - Rt=1/1/R1+1/R2+1/R3... Inductors in Series - Lt=L1+L2+L3... Inductors in Parallel - Lt=1/1/L1+1/L2+1/L3... Capacitors in Series - Ct=1/1/C1+1/C2+1/C3... Capacitors in Parallel - Ct=C1+C2+C3...