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 a circle. an ellipse. sinisoidal. a straight line. a circle. an ellipse. sinisoidal. a straight line. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The two pressure coils of a single phase power factor meter have None of these The same dimension but different number of turns The same dimensions and the same number of turns The same number of turns but different dimensions None of these The same dimension but different number of turns The same dimensions and the same number of turns The same number of turns but different dimensions ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of following is not correct? Voltmeter should have very high resistance. An electronic voltmeter draw appreciable current from the source. An ammeter should have a very low resitance. A shunt should have a very low resistance. Voltmeter should have very high resistance. An electronic voltmeter draw appreciable current from the source. An ammeter should have a very low resitance. A shunt should have a very low resistance. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. This is to have full deflection when 100V is measured. What is the value of series resistor to be used? 100 ohms 100 K ohms 99.99 K ohms 99.99 ohms 100 ohms 100 K ohms 99.99 K ohms 99.99 ohms ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation ______ instruments are most sensitive. Moving iron Hot wire Permanent magnet moving coil Dynamometer Moving iron Hot wire Permanent magnet moving coil Dynamometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Wagner earthing device is used to eliminate errors due to Electrostatic coupling Both A and B None of these Electromagnetic coupling Electrostatic coupling Both A and B None of these Electromagnetic coupling ANSWER DOWNLOAD EXAMIANS APP
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