Measurement and Instrumentation The use of __________________ instruments is merely confined within laboratories as standardizing instrument. recording. integrating. indicating. absolute. recording. integrating. indicating. absolute. 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 Ripples of the DC supply. Stray thermal emfs. Errorneous standardisation. Stray magnetic fields. Ripples of the DC supply. Stray thermal emfs. Errorneous standardisation. Stray magnetic fields. 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? 99.99 ohms 100 ohms 100 K ohms 99.99 K ohms 99.99 ohms 100 ohms 100 K ohms 99.99 K ohms ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The effect of stray magnetic fields on the actuating torque of a portable instrument is maximum when the operating field of the instrument and stray fields are inclined at 30o. perpendicular. parallel. inclined at 60o. inclined at 30o. perpendicular. parallel. inclined at 60o. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Magnetic deflection is inversely proportional to (Voltage)2. (Voltage)1.5. (Voltage)-0.5. Voltage. (Voltage)2. (Voltage)1.5. (Voltage)-0.5. Voltage. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When the pointer of an indicating instrument comes to rest in the final deflected position, ______ Only controlling torque acts Only deflecting torque acts None of the listed here Both deflecting and controlling torques act Only controlling torque acts Only deflecting torque acts None of the listed here Both deflecting and controlling torques act ANSWER DOWNLOAD EXAMIANS APP
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