ELECTROTECHNOLOGY ELTK1100 QUIZ #2 SOLUTIONS 1. What ...
ELECTROTECHNOLOGY ELTK1100 QUIZ #2 SOLUTIONS 1. What ...
ELECTROTECHNOLOGY ELTK1100 QUIZ #2 SOLUTIONS 1. What ...
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<strong>ELECTROTECHNOLOGY</strong><br />
ELTK1102<br />
<strong>QUIZ</strong> <strong>#2</strong><br />
<strong>SOLUTIONS</strong><br />
<strong>1.</strong> <strong>What</strong> is the value of the following<br />
Ohmmeter reading if the selector<br />
switch is set on Rx10K<br />
Can you do something to make the<br />
reading more accurate If yes, what<br />
is it If no, why<br />
165K = 165000<br />
Yes, switch range switch to Rx100K,<br />
which will place needle between halfscale<br />
and full-scale deflection.<br />
2. <strong>What</strong> is the value of the following D.C. Voltmeter<br />
reading if the selector switch is set on 25<br />
Can you do something to make the reading<br />
more accurate If yes, what is it If no, why<br />
17.2V<br />
No, needle is between half-scale and full-scale<br />
deflection.<br />
3. Calculate the values of R 1, R3, R 4, R T, and V T.<br />
From KVL for series circuits
V (V) I (mA) R ()<br />
T 21<br />
2<br />
7.5 2800<br />
3<br />
1 3 7.5 400 4<br />
2 6 1 7.5 800<br />
3 8 7.5 1067 5<br />
4 4 7.5 533 6<br />
Series circuit<br />
Note: Superscript numbers on formulas correspond to superscript numbers in VIR chart.
<strong>ELECTROTECHNOLOGY</strong><br />
ELTK1102<br />
<strong>QUIZ</strong> <strong>#2</strong><br />
<strong>SOLUTIONS</strong><br />
<strong>1.</strong> <strong>What</strong> is the value of the following<br />
Ohmmeter reading if the selector<br />
switch is set on Rx10K<br />
Can you do something to make the<br />
reading more accurate If yes, what is<br />
it If no, why<br />
35k = 35000<br />
No, needle is between half-scale and<br />
full-scale deflection.<br />
2. <strong>What</strong> is the value of the following D.C. Voltmeter<br />
reading if the selector switch is set on 50<br />
Can you do something to make the reading<br />
more accurate If yes, what is it If no, why<br />
8.5V<br />
Yes, switch range switch to 25, which would<br />
increase accuracy or even better 10, which will<br />
place needle between half-scale and full-scale<br />
deflection.<br />
3. Calculate the values of R 1, R3, R 4, R T, and I T.<br />
From KCL for parallel circuits
V (V) I (mA) R ()<br />
2 3<br />
T 24 80 300<br />
1 24 16 1500 4<br />
2 24 24 1 1000<br />
3 24 30 800 5<br />
4 24 10 2400 6<br />
Parallel circuit<br />
Note: Superscript numbers on formulas correspond to superscript numbers in VIR chart.
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