A/D conversion rate is ____
1.variable
2.predefined
3.zero
4. constant
A/D converters can’t be used for low frequency ranges.
1.True
2.False
3.all of the above
4.None of the mentioned
ADD ON card is used for _______
1. to reduce noise
2.communication
3.to boost the magnitude
4.to measure voltage
Feedback path element measure only input parameters.
1.True
2.False
3.all of the above
4.None of the mentioned
For proper feedback in a process control element, it is required to ________
1.measure P
2.measure set point
3.measure error
4.measure comparator
How many types of multiplexed system exist?
1.2
2.3
3.5
4.10
In a Multichannel Analog Multiplexed System _______
1. A/D converter is used
2. D/A converter is used
3. Sigma delta converter is used
4. Modulator is used
In a Multichannel Analog Multiplexed System, data stored in sample and hold circuit is converted into analog form.
1.True
2.False
3.all of the above
4.None of the mentioned
Input signal range in a PC based data acquisition system is _______
1.0.10 mV to 1 V
2.1 mV to 100 V
3. 5 mV to 5 V
4.10 mV to 10 V
Mechanical transducers generate ________
1.electrical signals
2.chemical signals
3.physical signals
4.biological signals
Multiplexing after A/D conversion provides immunity to noise.
1.True
2. False
3.all of the above
4.None of the mentioned
System parameters are distinguished by physical attributes.
1.True
2.False
3.all of the above
4.None of the mentioned
The buffer output is _____
1. analog
2.zero
3.digital
4. mixed mode
What are auxiliary equipments?
1. equipment
2.guard rings
3.devices
4.voltage source
A process control system consists of ____
1. 10 elements
2.6 elements
3.2 elements
4. 4 elements
A single channel data system consists of a signal conditioner, A/D converter and a buffer.
1. True
2.False
3.all of the above
4.None of the mentioned
A transducer converts _____
1.mechanical quantity to electrical form
2.electrical quantity to physical form
3. physical quantity to electrical form
4.chemical quantity to physical form
A transducer is part of a large circuit and produces the required output.
1.True
2.False
3.all of the above
4.None of the mentioned
A/D converter is used for _____
1.converting analog to digital
2. converting digital to analog
3. converting digital to mixed signal mode
4.converting analog to mixed signal mode
Amplified input signal is digitised through ____
1. A/D converters
2.D/A converters
3.Rectifiers
4.Sigma delta modulators
An electrical transducer consists of ________
1.4 parts
2.6 parts
3.8 parts
4.2 parts
Before and after each test, calibration is carried out.
1.True
2.False
3.all of the above
4.None of the mentioned
Data acquisition systems are not widely used.
1. True
2.False
3.all of the above
4.None of the mentioned
Data analysis hardware is used for _______
1.making the process independent
2.slowing the process
3. fastening the process
4.making the process constant
Digital acquisition systems are used when ____
1.bandwidth is high
2.bandwidth is medium
3.bandwidth is zero
4. bandwidth is low
Digital outputs are obtained from _______
1. A/D converter
2. D/A converter
3. Oscilloscope
4.Voltage source
Electrical signals are easy to amplify.
1. True
2. False
3.all of the above
4.None of the mentioned
Electrical transducers generate _______
1.biological signals
2.chemical signals
3.physical signals
4. electrical signals
For lower accuracies ______
1. digital acquisition system is used
2.both digital and analog acquisition systems are used
3. analog acquisition system is used
4.mechanical data acquisition system is used
How can the input be isolated from the system?
1.using optocouplers
2. using op-amps
3.using a capacitor
4.using rectifiers
How many types of transducers are there?
1.2
2.4
3.6
4.8
Many channels can be monitored at the same time by ________
1.Demultiplexing
2. A/D conversion
3.Multiplexing
4.D/A conversion
Mechanical transducers sense ______
1.electrical changes
2. physical changes
3. chemical changes
4.biological changes
Multichannel Analog Multiplexed System is ______
1. very fast
2.fast
3.slow
4. moderate
Multichannel Analog Multiplexed System utilises time _____
1.using a transformer
2.using a capacitor
3. using a flip-flop
4.using a mux
Multichannel data acquisition system has _______
1.multiple channels
2.single channel
3. two channels
4.five channels
Multiplexing after A/D conversion involves ________
1.noisy data
2. mixed signal data
3.analog data
4.digital data
Output of A/D converter is ______
1. given to an analog display
2. given to a digital display
3.given to a CRO
4. given to a voltmeter
PC based data acquisition system displays system parameters _______
1. once in a while
2.intermittently
3. continuously
4.only at specific intervals
Personal computer does not contain additional hardware in a PC based data acquisition system.
1.True
2.False
3.all of the above
4.None of the mentioned
Physical parameters change due to ______
1.voltage
2.current
3.internal and external disturbances
4.power
What are MIMIC displays?
1. man-material interface
2.man-made interface
3. man-machine interface
4.man-machine interface
What is a digital recorder?
1.records digital data
2.records analog data
3.does not record data
4.records both analog and digital data
What is a process control system?
1. system to keep the parameters at zero value
2.system to maintain the parameters constant
3.system to keep the parameters at highest value
4. system to check the voltage
What is pre-amplification?
1. reducing the magnitude of a signal
2.making the magnitude of a signal zero
3.reducing the noise
4.boosting the signal
What is the main function of auxiliary equipment?
1.unit step response
2. ramp response
3.non-linear response
4.linear response
What is the main objective of process control?
1. to control physical parameters
2.to control mechanical parameters
3.to control optical parameters
4.to control electrical parameters
What led to the development of PC based transducers?
1.low cost
2.medium cost
3.high cost
4. zero cost
Which is the best example of a single channel data acquisition system?
1. CPM
2.BPM
3.APM
4.DPM
Which technique is most widely used in the single channel data acquisition system?
1.Counter type approximation
2.Flash approximation
3. Successive approximation
4. Delta Sigma approximation