The document lists the names of 8 students and an instructor for Group 5. It then contains 8 multiple choice or true/false questions about electrical measurement tools and calculations. The questions cover topics like types of ohmmeters, components for time measurement, calculating power from current and voltage, factors affecting IR test results, ways to connect a wattmeter, the characteristics of a voltmeter, using the three ammeter method to find power supplied in a circuit, and calculating soil resistivity from a resistance reading and electrode spacing and depth.

1. GROUP 5
KentTumanda Bonie Nagac
NikkoLiguan Bryan KentBalbanida
CraytonRae Enot Frans KristanDelante
AlexanderEmpleo JeyvinTambulian
Jaypaul Haclad Mark JosephRoiles
AshAmantiad Dave AnthonySaplot
1. What are the twobasic typesof digital ohm-meter?
Ans:successive approximationdigitalohm-meter;currentsource digital ohm-meter
2. What are the three basicelectroniccomponentsneededfortime measurement?
Ans:oscillator,electronicswitch,counter
3. True or False:DCpowercouldbe obtainedbymultiplyingcurrenttovoltage.
Ans: True
4. Factors that affectIRtest results?
Ans.Temperature,Humidity
5. What are the 3 waysto connecta Watt-meter?
Ans.Direct,Semi-direct,Indirect
6. True or False:The voltmeterhasalow internal resistance.
Ans:False
7.
Findthe powersuppliedinthe figure usingthree ammetermethod.
𝐼2 =
𝑉
𝑅
=
20
10
= 5 𝐴
𝑃 =
10
2
[(10)2 − (5)2 − (5)2]
𝑃 = 5(100 − 25 − 25)
𝑃 = 5(50)
𝑃 = 250 𝑊

2. 8. You have decidedtoinstall three meterlonggroundrodsas part of your groundingsystem.To
measure the soil resistivityata depthof three meters,we discussedaspacingbetweenthe test
electrodesof six meters.Assumethe readingof the resistance aftertestingis100Ω.
Findthe soil resistivity.
Given:
a = 6meters(betweenspacing)
b = 3meters(depthof electrode)
R = 100Ω
Req:Soil Resistivity
Solution:
Since a>b, then:
ρ = 2πaR
ρ = 2π(6meters)(100Ω)
ρ = 3769.91Ω.m