Electrical Measurements Mock Test 8

10%

Question 1 of 10

1. 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.

There is a constant but small phase difference between the signals

The signals are not sinusoidal in nature

The amplitudes of the signals are very close but not equal

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

Question 1 of 10

Question 2 of 10

2. Signals are applied to ___________

input

gain control stage

output

capacitor

Question 2 of 10

Question 3 of 10

3. How is the data displayed?

through a screen

through an FPGA

through a computer

through a microprocessor

Question 3 of 10

Question 4 of 10

4. How is error in measurement reduced?

using r.m.s value

using peak to peak value

using absolute value

using a voltmeter

Question 4 of 10

Question 5 of 10

5. Transducer produces a _________

proportional voltage

proportional resistance

proportional power

proportional current

Question 5 of 10

Question 6 of 10

6. What adjusts the amplitudes of the signals A and B?

Oscillator

L₁ and L₂

C₁ and C₂

R₁ and R₂

Question 6 of 10

Question 7 of 10

7. A recorder is a device ________

Which records electrical and non-electrical quantities or relates two signals to each other as a function of time

An indicating instrument which displays a time-varying signal

Which records the value of the quantity measured as well as the electrical and non-electrical quantities as a function of time

Whose function is to record the value of the quantity as it is being measured

Question 7 of 10

Question 8 of 10

8. CRO is used in a radar for __________

visualizing a target

determining the distance between source and destination

studying the pattern of flights

measuring voltage

Question 8 of 10

Question 9 of 10

9. Nyquist criteria states that ______________

F_s = f_max/2

F_s ≥ 2f_max

F_s = f_max

F_s = 2

Question 9 of 10

Question 10 of 10

10. In Sequential repetitive sampling how many samples are captured?

five

one

two

ten

Question 10 of 10