Measurement and Instrumentation The calibration of a voltmeter can be carried out by using A potentiometer. A frequency meter. An ammeter. A function generator. A potentiometer. A frequency meter. An ammeter. A function generator. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A spring controlled indicating instrument has a deflection of 90deg for maximum current I. The corresponding deflection for a gravity controlled instrument is 30° 120° 90° 0° 30° 120° 90° 0° ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation _______ is used to measure the flow of air around aeroplane. Venturimeter. nucleus. Anemometer. Orifice. Venturimeter. nucleus. Anemometer. Orifice. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be 1.5% 1% 1.2% 0.5% 1.5% 1% 1.2% 0.5% 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 Errorneous standardisation. Stray magnetic fields. Stray thermal emfs. Ripples of the DC supply. Errorneous standardisation. Stray magnetic fields. Stray thermal emfs. Ripples of the DC supply. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation To measure the flux, devices used are based on Hall effect Piezo-electric effect Photo-voltaic effect Voltaic effect Hall effect Piezo-electric effect Photo-voltaic effect Voltaic effect ANSWER DOWNLOAD EXAMIANS APP
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