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MEASUREMENT DEVICES (Chapter 1)

Total questions: 10

Worksheet time: 7mins

Name
Class
Date
1.

These are the elements of measurement system, EXCEPT

a)

Primary Sensing

b)

Data Presentation

c)

Error Sensing

d)

Variable Manupulation

2.

Which of the following error is considered as systematic error?

a)

Absolute Error

b)

Environmental Error

c)

Gross Error

d)

Relative Error

3.

Determine which of the following is the formula for Relative Error.

a)

Xn+YnXn\frac{\left|X_n+Y_n\right|}{X_n}

b)

YnXnYn\frac{\left|Y_n-X_n\right|}{Y_n}

c)

YnXnXn\frac{\left|Y_n-X_n\right|}{X_n}

d)

Xn+YnYn\frac{\left|X_n+Y_n\right|}{Y_n}

4.

Calculate the percentage of relative error if the expected value of the voltage across a resistor is 4.5V. Meanwhile the measurement yields a value of 4.3 V.

a)

0.2%

b)

4.65%

c)

4.54%

d)

4.44%

5.

The standard resistor, capacitor, inductor which usually found in an electronics laboratory are classified as

a)

Working Standard

b)

Primary Standard

c)

Secondary Standard

d)

International Standard

6.

Taking reading of a multimeter by not keeping it at the eye level gives rise to ........

a)

Systematic error

b)

Random error

c)

Absolute error

d)

Gross error

7.

Repeating a reading never removes the systematic error.

a)

True

b)

False

8.

Repeated measurements of a quantity can reduce the effects of .......

a)

both random error and systematic error

b)

neither random error nor systematic errors

c)

random error

d)

systematic error

9.

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

a)

15.79%

b)

18.75%

c)

2.25%

d)

18%

10.

Which combination BEST describe the image at the left?

a)

High Accuracy & High Precision

b)

High Accuracy & Low Precision

c)

Low Accuracy & High Precision

d)

Low Accuracy & Low Precision