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WorksheetsInstrument Transducers Quiz 2
Total questions: 25
Worksheet time: 17mins
(a) transducer requires external power supply for operation.
tick the passive transducers
strain gauge
piezoelectric transducer
bourdan tube
potentiometer
the approximate value of gauge factor of metals is (a)
As length increases, resistance increases
true
false
As area increases, resistance increases
true
false
Resistivity can be changed by changing the type of (a)
when a tensile force is given
length increases, area increases
length increases, area decreases
length decreases, area increases
length decreases, area decreases
when a compressive force is given
length icreases, area increases
length increases, area decreases
length decreases, area increases
length decreases, area decreases
poisson's ratio is given by -()
L∂LD∂D
D∂DL∂L
L∂LR∂R
D∂DR∂R
Gauge factor equation is:
RΔR
1+2ν
Both of these
None of these
For eliminating loading effect, meter resistance should be:
0
∞
1
R2
Ratio of output to input is called (a)
Resistance per unit length is given by:
R/xi
R/xt
xi/xt
xi
Length of a pot is 20mm and its total resistance is 100 ohms. What is the resistance of part of pot when the wiper is at a displacement of 15mm from zero point.
75 ohms
50 ohms
80 ohms
None of these
Let input voltage = 20V. R=150 Ohms. xt= 100mm. xi= 50mm. find the output voltage.
10 V
15 V
5 V
None of these
Find the sensitivity.
ei= 10v
e0= 5v
xi =5mm
xt = 10mm
1
0.5
2
2.5
Resistance of a pot can be varied by varying the
cross sectional area
length
resistivity
cross sectional diameter
Resistive wire of pot is made of
platinum
nickel alloy
both of these
none of these
Strain gauge is a
active transducer
resistive transducer
both of these
none of these
potentiometer is a
resistive transducer
passive transducer
both of these
none of these
potentiometer converts................. to ..................
voltage to displacement
displacement to voltage
temperature to voltage
stress to voltage
strain gauge converts.............. to ................
displacement to voltage
strain to voltage
both of these
none of these
pot has (a) terminals
..................... converts pressure to voltage
bourdan tube
LVDT
Thermocouple
none of these
Resistive transducer works in ..............
AC
DC
Both of these
Doesn't requires a power supply.
