Elec Final

Question 1

what happens to current in a circuit where resistance is increased

Answer 1

Decreases

Question 2

what will happen to current when voltage is increased

Answer 2

Increases

Question 3

what is Ohms law

Answer 3

V=IxR

Question 4

what remains constant in a parallel circuit

Answer 4

Voltage

Question 5

What remains the same in a series circuit

Answer 5

Current

Question 6

What is the formula to determine Wattage

Answer 6

P=IxV

Question 7

what is the minimum amount of current required to activate a relay

Answer 7

pick up current

Question 8

what happens to a normally closed contact when it is unpowered

Answer 8

It remains closed / active

Question 9

what does DPST-NO stand for

Answer 9

Double pole, single throw, normally open

Question 10

A diode with low resistance in both directions is most likely

Answer 10

Shorted

Question 11

what are aircraft circuit breakers designed to protect

Answer 11

wires

Question 12

the cathode of a diode represents which side

Answer 12

negative

Question 13

what is the bias voltage on a silicone semiconductor

Answer 13

0.7 Volts

Question 14

what are the 3 connections on a transistor

Answer 14

base, collector, emitter

Question 15

what is the main difference between a fuse and a circuit breaker

Answer 15

circuit breaker can be reset

Question 16

what are the two different battery cell types? which can be recharged

Answer 16

primary and secondary

secondary can be recharged

Question 17

how would the voltage of two or more batteries be increased

Answer 17

hook them in series

Question 18

what is the name of the negative pole on a battery

Answer 18

cathode

Question 19

will the closed circuit voltage of a battery always be higher than the open circuit voltage

Answer 19

no

Question 20

what effect would hooking two or more batteries in parallel have

Answer 20

increase the current output

Question 21

when a transistor is on, what will the voltage between the base and emitter be

Answer 21

0.7V

Question 22

what are two types of transistors

Answer 22

NPN and PNP

Question 23

what happens to the electrolite of a NI Cad battery when charging

Answer 23

Increases

Question 24

what are the two most common aircraft batteries? which is more commonly used in larger aircrafts

Answer 24

lead acid and Nickle Cadmium (Ni Cad)

Ni Cad is most common in large aircrafts

Question 25

what is used as electrolite in lead acid batteries

Answer 25

sulfuric acid and water

Question 26

what is the single cell voltage of a lead acid battery

Answer 26

2.1V

Question 27

what is used to test the armature of a generator

Answer 27

Growler

Question 28

what affects the output of DC generators

Answer 28

Speed of rotation

Question 29

what functions are normally incorporated into a three unit voltage regulator

Answer 29

Voltage, current limiter, reverse current relay

Question 30

what produces the magnetic field in a generator

Answer 30

field windings

Question 31

what is commonly used to reduce static build up on aircrafts

Answer 31

static wicks

Question 32

what direction must a conductor move through a flux field to produce EMF

Answer 32

Perpendicular (90 degrees)

Question 33

what is the procedure called for restoring magnetism in a field pole

Answer 33

flashing

Question 34

what was introduced by michael faraday

Answer 34

flux lines

Question 35

do unlike poles attract

Answer 35

yes

Question 36

what happens when current through a coil is increased

Answer 36

magnetism increases

Question 37

what happens to the output voltage if the shunt field current decreases

Answer 37

decreases

Question 38

do generators have slip rings

Answer 38

no

Question 39

what term describes the production of a magnetic field around the armature

Answer 39

armature reaction

Question 40

what are the three most common types of generators and motors

Answer 40

shunt, parallel and compound

Question 41

when connecting a battery, which lead should be connected first

Answer 41

positive