Question 1

A multiplexer is used for _________
A)accepting multiple inputs
B)accepting single input
C)accepting multiple outputs
D)accepting single output

Accepted Answer

A multiplexer is a device that accepts multiple inputs and selects one of them to be sent to the output.

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

Accepted Answer

The time required to complete the conversion of Analog to Digital is typically less than the duration of the hold mode of Sample and Hold (S/H) to ensure that the analog signal is accurately captured and converted without changes during the conversion process.

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

Accepted Answer

The sampling period T in an A/D converter should be larger than the duration of the sample mode and the hold mode to ensure that there is enough time to accurately capture and convert the analog signal to a digital signal without overlap or interference between successive samples.

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

Accepted Answer

During the hold period, the output of the op-amp in sample and hold circuits is processed. This is because the circuit maintains the last sampled value, allowing for processing or conversion to occur without changes to the signal.

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

Accepted Answer

Sample and hold circuits are used in all the mentioned applications to maintain a stable voltage level for processing.

Question 6

The opamp in the Inverting circuit is in __________
A)Linear region
B)Saturation
C)Cut-off region
D)Non-linear region

Accepted Answer

In an inverting amplifier configuration, the operational amplifier (opamp) operates in the linear region to provide a stable, linear amplification of the input signal. This is essential for the opamp to accurately amplify the input signal without distortion.

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

Accepted Answer

In an Inverting Amplifier circuit, the output voltage (vo) is primarily a function of the source voltage (input voltage), as the amplifier inversely amplifies the input signal voltage.

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

Accepted Answer

In a non-inverting amplifier configuration, the positive terminal (non-inverting input) is connected to the input signal, which can be a power source or signal source, while the negative terminal (inverting input) is connected to the output through a feedback network.

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

Accepted Answer

In an ideal non-inverting operational amplifier, the input resistance is considered infinite to ensure no current flows into the input terminals, and the output resistance is considered zero to allow the amplifier to drive loads without affecting the output voltage.

Question 10

Which is the best example of a single channel data acquisition system?
A)CPM
B)BPM
C)APM
D)DPM

Accepted Answer

DPM (Digital Panel Meter) is the best example of a single channel data acquisition system because it is designed to measure and display a single parameter or input at a time, making it a single channel system.

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

Accepted Answer

Successive approximation is the most widely used technique in single channel data acquisition systems due to its balance between speed and complexity, making it suitable for a wide range of applications.

Question 12

Multichannel data acquisition system has __________
A)multiple channels
B)single channel
C)two channels
D)five channels

Accepted Answer

A multichannel data acquisition system is designed to handle multiple channels, allowing it to collect data from several sources simultaneously.

Question 13

Multichannel Analog Multiplexed System is __________
A)very fast
B)fast
C)slow
D)moderate

Accepted Answer

Multichannel Analog Multiplexed Systems are generally considered slow because they involve the transmission of multiple signals over a single channel, which can lead to delays and lower transmission speeds compared to systems that use separate channels for each signal.

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

Accepted Answer

Multichannel Analog Multiplexed Systems utilize time by using a multiplexer (mux) to combine multiple signals into one signal for transmission. A mux selects between several analog or digital input signals and forwards the selected input into a single line, making it essential for time-division multiplexing in analog systems.

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

Accepted Answer

An A/D converter is used in a multichannel analog multiplexed system to convert the analog signals from multiple channels into digital form for processing or transmission.

Question 16

Many channels can be monitored at the same time by __________
A)Demultiplexing
B)A/D conversion
C)Multiplexing
D)D/A conversion

Accepted Answer

Multiplexing is the process of combining multiple signals into one signal, over a shared medium, which allows for the monitoring of many channels simultaneously.

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

Accepted Answer

The stop band is the region of frequencies above the stop band frequency where the filter attenuates the signal.

Question 18

Which of the following is not correct for data loggers?
A)Portability
B)Battery less
C)Small
D)All of the mentioned

Accepted Answer

Data loggers are typically portable and small, designed for convenience and accessibility in various environments. However, they are not battery-less; they often require batteries to operate, especially when deployed in remote or unpowered locations.

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

Accepted Answer

Chart recorders are similar to electronic data loggers as both are used for recording data over time. Chart recorders traditionally use paper to record data, while electronic data loggers record data digitally.

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

Accepted Answer

All data acquisition systems are not data loggers. Data acquisition systems can also be used for real-time data analysis and control.

Quiz 8: Data Acquisition and Signal Processing Techniques

A multiplexer is used for _________

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

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

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

Sample and hold circuit are used in

The opamp in the Inverting circuit is in __________

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

In the non-inverting configuration of operational amplifier

For ideal non-inverting operational amplifier

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

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

Multichannel data acquisition system has __________

Multichannel Analog Multiplexed System is __________

Multichannel Analog Multiplexed System utilises time __________

In a Multichannel Analog Multiplexed System __________

Many channels can be monitored at the same time by __________

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

Which of the following is not correct for data loggers?

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

Which of the following statement is false?