Measurement and Instrumentation The calibration of a voltmeter can be carried out by using A frequency meter. An ammeter. A function generator. A potentiometer. A frequency meter. An ammeter. A function generator. A potentiometer. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation If two 300V full scale voltmeters V1 and V2 having sensitivities of 100 kOhm/V and 150 kOhm/V are connected in series to measure 500V then V1 = 200V and V2 = 300V. V1 = 0V and V2 = 0V. V1 = 250V and V2 = 250V. V1 = 300V and V2 = 200V. V1 = 200V and V2 = 300V. V1 = 0V and V2 = 0V. V1 = 250V and V2 = 250V. V1 = 300V and V2 = 200V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Piezoelectronic accelerometer Should be used for low frequency. Should be used for high frequencies above 100 Hz. Has a low natural frequency. Should use a monitoring source at low input impedance. Should be used for low frequency. Should be used for high frequencies above 100 Hz. Has a low natural frequency. Should use a monitoring source at low input impedance. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Electrostatic instruments are normally used for High current measurements Low voltage measurements Low current measurements High voltage measurements High current measurements Low voltage measurements Low current measurements High voltage measurements ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Deflection method direct measurements are most widely used as these are most simple and least time consuming. most simple. most accurate. least time consuming. most simple and least time consuming. most simple. most accurate. least time consuming. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In DC potentiometer measurments, a second reading is often taken after reversing the polarities of the DC supply and the unknown voltage and the average of the two reading is taken. This is with a view of eliminate the effects of Stray magnetic fields. Stray thermal emfs. Ripples of the DC supply. Errorneous standardisation. Stray magnetic fields. Stray thermal emfs. Ripples of the DC supply. Errorneous standardisation. ANSWER DOWNLOAD EXAMIANS APP
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