Electrical Measurements Practice Test 8

1. Before and after each test, calibration is carried out.

False

True

2. Transducer is used to convert a _________

electrical signal into a physical quantity

physical quantity into a chemical quantity

physical quantity into a mechanical quantity

physical quantity into an electrical signal

3. CRO is used for many purposes in the industry.

True

False

4. A multiplexer is used for _________

accepting single output

accepting single input

accepting multiple outputs

accepting multiple inputs

5. Data measurement systems are __________

rigid

not flexible

less flexible

more flexible

6. Output signal is captured using _________

recorder

CRO

voltmeter

plotter

7. X-Y mode means ____________

vertical and horizontal

2 modes

x axis and y axis

ground and full line supply

8. The two inputs of a CRO are fed with two stationary periodic signals. The figure changes from ellipse to circle and back to ellipse with its major axis changing orientation slowly and repeatedly. The following inference can be made from this.

The signals are not sinusoidal in nature

The signals are sinusoidal with their frequencies very close but not equal

There is a constant but small phase difference between the signals

The amplitudes of the signals are very close but not equal

9. Two methods are used to generate independent traces.

True

False

10. Transducer produces a _________

proportional voltage

proportional power

proportional current

proportional resistance