Identify the 'CORRECT' statements,
1. Loading effect is primarily caused by instruments having low sensitivity.
2. Relative error is the difference between the measured value and the true value.
3. Resolution is small increment is measurand that can be detected with certainty by the instrument.
4. Moving-coil permanent magnet instruments can be used for the measurements of AC and DC.
Consider the following statements regarding data acquisition systems:
1. Digital data acquisition systems are used when wide frequency width is required.
2. Analog data acquisition system are more complex the digital systems.
3. Digital data acquisition systems are used when the physical quality being monitored has narrow bandwidth.
Which of the above statements are not correct?
A dc potentiometer is designed to measure up to about 2 V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of the test cell is
A coil is tuned to resonance at 500 kHz with a resonating capacitor of 36 pF. At 250 kHz, the resonance is obtained with resonating capacitor of 160 pF. What is the self-capacitance of the coil?
A resistance strain gauge is cemented to a steel member, which is subjected to a strain of 2 × 10-6. If the original resistance is 100 Ω and change in resistance is 600 µΩ, the gauge factor will be
The arrangement shown in the given figure represents an RC potentiometer for measuring ac voltage. What should be the value of C so that V0/Vin is independent of the frequency of the input signal?
