final

Question 1

how would you solve for voltage measured with a reference point at a point to be measured

Answer 1

1. establish the Vs
2. solve RT: R1+R2…
3. solve IT: VS/RT

v1 = (IT)(R1)
v2= (IT)(R2) ...

Question 2

according to Kirchhoff’s voltage law, what will be the sum of all voltages dropped across R1, R2, and R3

Answer 2

is equal to the total source voltage in that loop.

Question 3

how would you determine the voltage across resistors in a parallel circuit?

Answer 3

voltage across is equal to the voltage source.

Question 4

how do u determine RT in a parallel circuit.

Answer 4

RT= 1/GT
GT = 1/R1+1/R2...

Question 5

truth table for AND logic

Answer 5

A x B = Y
0 x 0 = 0 
0 X 1 = 0
1 X 0 = 0 
1 X 1  =  1

Question 6

truth table for NAND logic

Answer 6

\_\_  \_\_
 A x B = Y
 0 X 0 = 1
 1  X 0 = 1
 0 X 1  = 1
 1  X 1 = 0

Question 7

truth table OR logic

Answer 7

A + B = Y
0 + 0 = 0 
0 + 1  = 1
 1 + 0 = 1
 1 + 1  = 1

Question 8

truth table NOR logic

Answer 8

\_\_  \_\_
 A + B = Y
 0 + 0 = 1
 0 + 1  = 0
 1 + 0  = 0 
 1 +  1  = 0

Question 9

what are the characteristics of the BJT common emitter (CE) amp

Answer 9

the CE has high power gain, would be a good driver for an audio speaker, and inverts the output signal.

Question 10

what are the characteristics of the BJT common base (CB) amp

Answer 10

highest output impedance, lowest current gain, and would be used to connect and antenna to an amplifier system

Question 11

what are the characteristics of the BJT common collector (CC) amp

Answer 11

has a voltage gain of 1

Question 12

among the three amp configuration CC, CB and CE, which has the highest power gain

Answer 12

CE

Question 13

among the three amp configuration CC, CB and CE, highest input impedance

Answer 13

CB

Question 14

among the three amp configuration CC, CB and CE, which has the lowest current gain

Answer 14

CB

Question 15

among the three amp configuration CC, CB and CE, which would be a good driver for an audio speaker

Answer 15

CE

Question 16

among the three amp configuration CC, CB and CE, which configuration would probably be used to connect an antenna

Answer 16

CB

Question 17

among the three amp configuration CC, CB and CE, which inverts the output signal

Answer 17

CE

Question 18

among the three amp configuration CC, CB and CE which has a voltage gain of 1

Answer 18

CC

Question 19

in a bjt circuit how would you solve for VB?

Answer 19

VB = (R2/R1+R2) VCC

Question 20

in a bjt circuit how would you solve for VE?

Answer 20

VE = VB - O.7V

Question 21

in a bjt circuit how would you solve for VRE?

Answer 21

VRE = VCC - 1V

Question 22

in a bjt circuit how would you solve for VC?

Answer 22

VC = VCC - (IC)(RC)

Question 23

in a bjt circuit how would you solve for VCE?

Answer 23

VCE = VC - VE

Question 24

in a bjt circuit how would you solve for IC

Answer 24

IC = VE / RC * NOTE IC = IE

Question 25

to perform a high level format on the hard drive and make it bootable, what syntax would you use

Answer 25

format c; \s

Question 26

how many bits are used in ASCII Code, assuming not parity bit

Answer 26

7

Question 27

if the highest frequency to be sampled is 3 kHz, what is the minimum acceptable sampling rate? (Nyquist Rate)

Answer 27

F/2

Question 28

what is the from of multiplexing in which data from different users is given different time slots within a data frame?

Answer 28

Time Division Multiplexing (TDM)

Question 29

which part of the instruction tells the microprocessor what operation is to be performed

Answer 29

opcode

Question 30

list the 7 layers of the OSI model

Answer 30

``` Application Presnetation Session Transport Network Data Physical ```

Question 31

list 4 layers of the tcp/ip

Answer 31

application transportation internet network

Question 32

what is VoIP?

Answer 32

Voice over IP

Question 33

what is the correct order of a PLC program scan

Answer 33

read input solve logic set output communcation

Question 34

why is serial data more mainstream than parallel data transfer

Answer 34

cheaper

Question 35

what are the inputs to the mixer stage in a superheterodyne receiver?

Answer 35

the frequency and local oscillator

Question 36

in a FM modulator what does the amplitude of the intelligence signal determine

Answer 36

frequency deviation Rate

Question 37

how do u calculate the S/N Ratio in decibel

Answer 37

S^2 / N^2 = (SUM) AND THAN 10 LOG (SUM) = Deibels

Question 38

draw a block diagram of a high level modulator

Answer 38

SEE PAPER NOTES

Question 39

draw a block diagram of a low level modulator

Answer 39

see paper notes

Question 40

what device can be used as a mixer in communication circuit

Answer 40

diodes

Question 41

draw a block diagram of a supereterodyne AM RX

Answer 41

see notes

Question 42

draw a block diagram of a superheterodyne FM RX

Answer 42

see notes

Question 43

what happens when electromagnetic waves pass from a medium of one density into another medium of a thicker density

Answer 43

refraction

Question 44

which RX uses a discriminator

Answer 44

anomaly detection

Question 45

which RX uses a discriminator

Answer 45

ratio detector