Deck 8: Data Acquisition and Signal Processing Techniques

Question 1

A multiplexer is used for _________

A)accepting multiple inputs
B)accepting single input
C)accepting multiple outputs
D)accepting single output

Answer 1

accepting multiple inputs

Question 2

The time required to complete the conversion of Analog to Digital is ________ the duration of the hold mode of S/H.

A)Greater than
B)Equals to
C)Less than
D)Greater than or Equals to

Answer 2

Less than

Question 3

In A/D converter, what is the time relation between sampling period T and the duration of the sample mode and the hold mode?

A)Should be larger than the duration of sample mode and hold mode
B)Should be smaller than the duration of sample mode and hold mode
C)Should be equal to the duration of sample mode and hold mode
D)Should be larger than or equals to the duration of sample mode and hold mode

Answer 3

Should be larger than the duration of sample mode and hold mode

Question 4

During which period the op-amps output of sample and hold circuits is processed?

A)Delay period
B)Sample and hold period
C)Sample period
D)Hold period

Question 5

Sample and hold circuit are used in

A)Analog to Digital modulation
B)Digital to analog modulation
C)Pulse position modulation
D)All of the mentioned

Question 6

The opamp in the Inverting circuit is in __________

A)Linear region
B)Saturation
C)Cut-off region
D)Non-linear region

Question 7

In an Inverting Amplifier circuit, the output voltage vo is expressed as a function of ____________

A)Input current
B)Output current
C)Source voltage
D)Source current

Question 8

In the non-inverting configuration of operational amplifier

A)The positive terminal is connected to the ground directly
B)The negative terminal is connected to the ground directly
C)The positive terminal is connected to the power source
D)The negative terminal is connected to the power source

Question 9

For ideal non-inverting operational amplifier

A)Input and output resistances are infinite
B)Input resistance is infinite and output resistance is zero
C)Input resistance is zero and output resistance is infinite
D)Input and output resistances are zero

Question 10

Which is the best example of a single channel data acquisition system?

A)CPM
B)BPM
C)APM
D)DPM

Question 11

Which technique is most widely used in the single channel data acquisition system?

A)Counter type approximation
B)Flash approximation
C)Successive approximation
D)Delta Sigma approximation

Question 12

Multichannel data acquisition system has __________

A)multiple channels
B)single channel
C)two channels
D)five channels

Question 13

Multichannel Analog Multiplexed System is __________

A)very fast
B)fast
C)slow
D)moderate

Question 14

Multichannel Analog Multiplexed System utilises time __________

A)using a transformer
B)using a capacitor
C)using a flip-flop
D)using a mux

Question 15

In a Multichannel Analog Multiplexed System __________

A)A/D converter is used
B)D/A converter is used
C)Sigma delta converter is used
D)Modulator is used

Question 16

Many channels can be monitored at the same time by __________

A)Demultiplexing
B)A/D conversion
C)Multiplexing
D)D/A conversion

Question 17

What is the region after the stop band frequency in the magnitude frequency response of a low pass filter?

A)Stop band
B)Pass band
C)Transition band
D)None of the mentioned

Question 18

Which of the following is not correct for data loggers?

A)Portability
B)Battery less
C)Small
D)All of the mentioned

Question 19

Which of the following devices are similar to electronic data loggers?

A)Chart recorders
B)Flip flop
C)Memory
D)None of the mentioned

Question 20

Which of the following statement is false?

A)All data loggers are data acquisition system
B)All data acquisition systems are data loggers
C)Data logger and Data acquisition systems are same is operation
D)All of the mentioned

Question 21

Data logger system have _______________

A)Slow sampling rate
B)Fast sampling rate
C)Unpredictable sampling rate
D)None of the mentioned

Question 22

Which of the following is correct for data loggers?

A)Simple single channel instrument
B)Medium channel instrument
C)Complex multiple channel instrument
D)All of the mentioned

Question 23

Data logger deals with __________________

A)Digital signals
B)Analog signals
C)Both digital and analog signals
D)None of the mentioned

Question 24

What is a multiplexer?

A)It is a type of decoder which decodes several inputs and gives one output
B)A multiplexer is a device which converts many signals into one
C)It takes one input and results into many output
D)It is a type of encoder which decodes several inputs and gives one output

Question 25

How many control lines are present in analog to digital converter in addition to reference voltage?

A)Three
B)Two
C)One
D)None of the mentioned