Test: Transducers- 1 - GATE MCQ
25 Questions MCQ Test - Test: Transducers- 1
A galvanometer with internal resistance 100 and full-scale current 1 mA is used to realize a dc voltmeter with a full-scale range of 1V. The full-scale range of this voltmeter can be extended to 10V by connecting an external resistance of value
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A piezoelectric type accelerometer has a sensitivity of 100 mV/g. The transducer is subjected to a constant acceleration of 5g. The steady-state output of the transducer will be
The figure shows a potentiometer of total resistance RT with a sliding contact.
The resistance between the points P and Q of the potentiometer at the position of the contact shown is RC, and the voltage ratio Vo/Vs at this point is 0.5. If the ratio RL/RT = 1, the ratio RC/RT is
A 4 kΩ, 0.02 W potentiometer is used in the circuit shown below. The minimum value of the
resistance Rs to protect the potentiometer is
The voltmeter is shown in the following figure has a sensitivity of 500Ω /V and a full scale of 100 V. When connected in the circuit as shown, then the meter reads 20 V. The value of Rx is
A quartz piezo-electric type pressure sensor has a built-in charge amplifier. The sensor has a sensitivity of 1 μV/Pa. It is subjected to a constant pressure of 120 kPa. The output of the transducer at a steady state is
A variable capacitance angular velocity pickup is made with two concentrically mounted parallel semi-circular plates with a small separation between them, as shown in Figure. A dc voltage is connected across the terminals of the capacitance sensor, as shown. For a constant angular velocity, the waveform of the current i (t) will be
A strain gauge of resistance 120 and gauge factor 2.0 is at zero strain condition A 200 kΩ
fixed resistance is connected in parallel with it. Then the combination will represent an equivalent
strain of
= 
= -300 μm/mA wire potentiometer of length 11 m and resistance 1 /m balances a standard cell voltage of 1.018 V at a length of 10 m 18 cm. If the voltage of the battery supplying the current through the potentiometer is 2.0 V, then the value of the series resistance connected to the potentiometer is
An N-type semiconductor or strain gauge has a nominal resistance of 1000Ω and a gauge factor of 100. The resistance of the gauge, when a compressive strain of 100mm/m is applied, is
A quartz crystal (Young’s modulus, E = 9 × 1010 N/m2) with piezo-electric properties has a diameter of 10 mm and thickness of 2 mm. Its voltage sensitivity constant is 4500 V/m. If the voltage output is 127.3 V, the applied load is approximately
A strain gauge is attached to a bar of length 20 cm, which is subjected to a tensile force. The nominal resistance of the strain gauge is 100 Ω . The changes in resistance and elongation in the bar measured are 0.35Ω and 0.2 mm, respectively. The gauge factor of the strain gauge is
Amount of heat liberated or absorbed when 1A current passes is called ____________
At equilibrium Lorentz forces will be ____________ of the Hall Effect force.
Which of the following represents the correct expression of Lorentz force?
Hall potential is inversely proportional to magnetic flux density.
Force exerted by magnetic field in Hall Effect transducers is ____________
Which of the following represents the correct expression for Lorentz force?
Which of the following represents the output of the Hall Effect transducer?
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