Rect & Batt Charge Part 1

Question 1

The value of DC that is the mathematical sum of all the instantaneous values recorded at even intervals over a fixed period is called the

Answer 1

Average value

Question 2

How may electrical degrees is one cycle?

Answer 2

360 degrees

Question 3

What is the formula for calculating the period of a sine wave?

Answer 3

T = 1/f

Question 4

What is another name for effective value?

Answer 4

RMS value

Question 5

What is the exponent number for using the prefix expression of nano?

Answer 5

10 ^ -9

Question 6

How do you test to see if an Ohmeter is working properly?

Answer 6

Touch the two leads together to verify operation

Question 7

What are the two types of ammeters?

Answer 7

Clamp-on and series

Question 8

The ammeter has an ideal resistance of how many ohms?

Answer 8

Zero

Question 9

Oscilloscopes show what values on what axis?

Answer 9

Time is horizontal and voltage is the amplitude (vertical)

Question 10

The electrons of one atom pairing up with those of neighbouring atoms in a semi conductor material is called

Answer 10

Covalent bonding

Question 11

Insulators have how many valence electrons

Answer 11

Five to eight

Question 12

Semiconductors have four valence electrons and Are referred to as what elements

Answer 12

Tetravalent

Question 13

Once intrinsic material has been doped, the result is what sort of material?

Answer 13

Extrinsic

Question 14

Doping silicon with pentavalent materials such as Arsenic, make what sort of semiconductor material?

Answer 14

N-Type

Question 15

P Type semiconductor material is made by doping silicon with what materials?

Answer 15

Trivalent

Question 16

Electrons are referred to as majority charge carriers in N-Type semiconductor material, whereas the majority charge carriers in P-Type material are :

Answer 16

Holes

Question 17

What is a metal oxide varistor?

Answer 17

It filters out voltage spikes that can occur on the ac supply.

Question 18

The lead connected to the P-Type Material is called an

Answer 18

Anode

Question 19

A diode only allows current to flow if the anode is positive with respect to the cathode with sufficient voltage. This diode is called a

Answer 19

Forward Bias Diode

Question 20

The maximum amount of reverse voltage that can be applied to a diode is call what?

Answer 20

Reverse Bias Limit, Voltage Repetitive Reverse Maximum (Vrrm), peak inverse voltage (PIV) or peak reverse voltage (PRV)

Question 21

Heat sinks are mounted vertically to make use of what effect

Answer 21

Chimney

Question 22

Diodes in the 150A to 500A range are usually

Answer 22

Stud mounted with pigtail, press fit, known as medium current diodes

Question 23

What is a freewheeling diode also known as?

Answer 23

Suppression or protection diode

Question 24

Diodes that block current and provide battery isolation to prevent one load from discharging both batteries are called

Answer 24

Isolating or Blocking diodes

Question 25

A photodiode allows a small current to flow when ______ ______ is applied

Answer 25

When “NO LIGHT” is applied , called Dark current

Question 26

LEDs are usually made of

Answer 26

Gallium Arsenic Phosphate (GaAsP) or Gallium Phosphate (GaP)

Question 27

Most common application of a diode is called a

Answer 27

Rectifier diode