ECE :: Measurements and Instrumentation
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Pirani gauge is used to measure
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Assertion (A): CRT is the most important component of a CRO.
Reason (R): When an electron beam strikes the screen of CRT, a spot of light is produced.
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A capacitance transducer has two plates each of area 5 mm2. The coil gap is 2 mm. Displacement sensitivity due to change in gap length is
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Four capacitors are in parallel. Their values are 36.3 μF, 3.85 μF, 34.002 μF and 850 μF with an uncertainty of digit in the last place. The total capacitance in significant figures is
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In figure, C0 is distributed capacitance and C is tuning capacitor. If C = C1 for fundamental frequency and C = C2 for second harmonic, then C0 =
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If M is mutual inductance between fixed and moving coils and θ is deflection of dynamometer instrument, then
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The switch board instruments
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Radiation pyrometer is used to measure temperature in the range of
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The electromagnets of an induction wattmeter
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In a vibrating reed frequency meter the natural frequency of two adjacent reeds have a difference of