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Electronics and Communication Engineering - Electronic Devices and Circuits

Exercise : Electronic Devices and Circuits - Section 9
1.
The output of a Piezoelectric crystal has
low amplitude and low impedance
high amplitude and low impedance
low amplitude and high impedance
high amplitude and high impedance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The pressure coil of a wattmeter should be connected to the supply side of the current coil when
load impedance in high
load impedance is low
voltage is high
voltage is low
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
A universal RLC bridge uses
Maxwell bridge for measurement of inductance and De Sauty's bridge for measurement of capacitance
Maxwell's bridge for measurement of inductance and modified De Sauty bridge for measurement of capacitance
Maxwell Wien bridge for measurement of inductance and modified De Sauty bridge for measurement of inductance
Maxwell Wien bridge for measurement of inductance and Wien bridge for measurement of capacitance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
If φsh is flux of shunt magnet, φse is flux of series magnet, ish is eddy current due to φse, the torque in an induction wattmeter is proportional to
φse ise + φsh ish
φsh ise - φse ish
φsh ish - φse ise
φsh ish + φse ise
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
If C is spring constant and θ is deflection, controlling torque is
Cθ
C/θ
θ/C
C2θ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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