Measurement and Instrumentation A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads 0 V. 2 V. (2 + √3/2)V. 5 V. 0 V. 2 V. (2 + √3/2)V. 5 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following devices should be used for accurate measurement of low D.C. voltage? Small range thermocouple voltmeter C. potentiometer None of these Small range moving coil voltmeter Small range thermocouple voltmeter C. potentiometer None of these Small range moving coil voltmeter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The three resistors R1, R2 and R3 have the following ratings: R1 = 25Ω ± 4%, R2 = 65 Ω ± 4%; R3 =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is 4% 2% 1% 3% 4% 2% 1% 3% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation To the y input of a CRO a signal defined by 10sin100t is applied. To the x input the signal 10cos100t is fed. The gain for both x-channel and y-channel is the same. The screen shows an ellipse. a straight line. a circle. sinisoidal. an ellipse. a straight line. a circle. sinisoidal. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Resistances can be measured with the help of Ammeters Ohmmeters and resistance bridges Wattmeters Voltmeters Ammeters Ohmmeters and resistance bridges Wattmeters Voltmeters ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Relative permittivity can be measured by _______ bridge Desautys. Schering. Wheatstones. Hays. Desautys. Schering. Wheatstones. Hays. ANSWER DOWNLOAD EXAMIANS APP
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