A transducer must have _______
1.maximum loading
2.minimum loading
3.zero loading
4.infinite loading
Analog transducers convert input into _______
1.voltage
2. current
3.digital
4. analog
Bonding element in a strain gauge must have ____
1.zero insulation resistance
2. low insulation resistance
3.high insulation resistance
4.infinite insulation resistance
Electrical strain gauge works on the principle of ______
1. variation of resistance
2.variation of capacitance
3. variation of inductance
4. variation of area
Electrical transducers are _____
1. small and non-portable
2.large and non-portable
3.small and compact
4. large and portable
Errors can be minimised in some transducers through ______
1.power compensation
2.voltage compensation
3.resistance compensation
4.temperature compensation
How can a transducer be used in the environment with vibrations?
1. using shock absorbers
2.using proper grounding
3.using effective voltage
4.using a transformer
In electromagnetic based transduction measurand is ______
1.converted into mechanical force
2.converted into electromotive force
3.converted into chemical force
4.converted into physical force
Inductive transduction involves _______
1.change in self inductance
2. change in capacitance
3.change in mutual inductance
4.change in resistance
Resistance potentiometers convert mechanical displacement into _____
1.electrical signal
2. chemical signal
3.physical output
4.kinetic energy
Strain gauge is a _______
1. inductive transducer
2.resistive transducer
3.capacitive transducer
4.mechanical transducer
Strain is defined as ____
1. change in height per unit height
2.change in weight per unit weight
3.change in length per unit length
4.change in diameter per unit diameter
The range of a transducer is _______
1.medium
2.narrow
3. large
4. zero
Transducers must operate under _______
1.zero electromagnetic field
2. constant electromagnetic fields
3.varying electromagnetic fields
4. infinite electromagnetic field
A transducer must be _____
1. quick in response
2.slow in response
3.medium in response
4. very slow in response
Accuracy is defined as the closeness that a reading approaches with respect to a standard value.
1.True
2.False
3.all of the above
4.None of the mentioned
Active transducers are classified into _________
1. 4 types
2.2 types
3. 6 types
4.8 types
Active transducers develops _________
1. mechanical parameter
2.electrical parameter
3.chemical parameter
4.physical parameter
Capacitive transduction involves _______
1.change in resistance
2. change in inductance
3.change in resistance
4.change in capacitance
Cement is classified under _____
1.4 types
2.2 types
3.6 types
4.8 types
Commonly used elements for wire strain gauges are _____
1.nickel and copper
2.nickel and gold
3.gold and brass
4.silver and aluminium
Digital transducers produce analog output.
1. True
2.False
3.all of the above
4.None of the mentioned
Dynamic strain measurements use ______
1.brass iron alloy
2. iron aluminium alloy
3.nickel cadmium alloy
4.nickel chromium alloy
Electrical transducers are costly.
1. True
2.False
3.all of the above
4.None of the mentioned
How do passive transducers develop electrical signals?
1.using a transformer
2.using internal source
3. using external source
4.using a diode
How many passive transducers are there?
1.1
2.3
3.5
4.7
Inverse transducer converts electrical into a physical quantity.
1.True
2. False
3.all of the above
4.None of the mentioned
Mechanical transducers cause ___
1.power loss
2.hysteresis loss
3.eddy current loss
4.frictional loss
Passive transducers are described with their primary parameters.
1.True
2.False
3.all of the above
4.None of the mentioned
Photovoltaic transduction involves _______
1.voltage generation heat
2.voltage generation through sound
3. voltage generation through light
4. voltage generation current
Potentiometric resistance transducer measures ______
1. linear displacement
2. rectangular displacement
3.square displacement
4. triangular displacement
Proper functioning of a strain gauge depends on _____
1.strain
2.stress
3. bonding
4.length of wire
Resistance of a metallic conductor is given by _______
1.R = Iâ„A
2.R = Ïâ„A
3.R = Ïlâ„A
4. R = 1â„A
Resistance potentiometer consists of ______
1. capacitive element
2. resistive element
3. inductive element
4.no elements
Resistance transducer has _____
1.medium efficiency
2. low efficiency
3. high efficiency
4. zero efficiency
Rotational potentiometers use ________
1.capacitance
2.self inductance
3.mutual inductance
4. resistance
Selection of a transducer depends on the quantity being measured.
1.True
2.False
3.all of the above
4.None of the mentioned
Sensitivity is the smallest value of measurable strain.
1. True
2.False
3.all of the above
4.None of the mentioned
Stress is defined as _________
1.diameter per unit area
2.length per unit area
3.weight per unit area
4.force per unit area
Stress vs strain curve is always linear.
1. True
2. False
3.all of the above
4.None of the mentioned
Temperature transducers make use of _____
1. change in resistivity
2.change in length
3.change in area
4.change in capacitance
The output of a transducer must be ________
1. low
2.medium
3. high
4.zero
The output of a transducer must _______
1.be different at different environment conditions
2.be same at all environment conditions
3.be same at some environment conditions
4.be zero always
The output of a transducer must ________
1.be less reliable
2.be highly reliable
3.not be reliable
4.be of medium reliability
The power needs of electrical transducers is ________
1.maximum
2.minimum
3.zero
4.infinite
The sensitivity of an electrical transducer is obtained by dividing the electrical output with respect to a unit change in the physical quantity.
1.True
2.False
3.all of the above
4.None of the mentioned
The size of a transducer must be ______
1.infinite
2. zero
3. large
4. small
The strain gauge is not bonded to the specimen.
1.True
2.False
3.all of the above
4.None of the mentioned
The transducer output is _______
1. exponential
2.unit step
3. non-linear
4.linear
What is a helipot?
1. inductive element
2.helicopter
3. helipad
4. resistive element