Measurement and Instrumentation The internal resistance of a milli-ammeter must be very low for minimum effect on the current in the circuit. high sensitivity. high accuracy. high precision. minimum effect on the current in the circuit. high sensitivity. high accuracy. high precision. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The total current I = I1 + I2 in a circuit is measured I1 = 150 ± 3A , I2 = 250 ± 4 A, where the limits of error are given as standard deviations. I is measured as (400 ± 1) A (400 ± 2.24) A (400 ±5) A (400 ± 3) A (400 ± 1) A (400 ± 2.24) A (400 ±5) A (400 ± 3) A ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Schering bridge is used to measure which of the following? Capacitance. Inductance. Resistance. Frequency. Capacitance. Inductance. Resistance. Frequency. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A variable w is related to three other variables x, y and z as w = xy/z. The variables are measured with meters of accuracy ± 0.5% reading, ± 1% of full scale value and ± 1.5% reading. The actual readings of the three meters are 80, 20 and 50 with 100 being the full scale value for all three. The maximum uncertainty in the measurement of w will be ± 8% ± 7% ± 5% ± 6% ± 8% ± 7% ± 5% ± 6% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance of a circuit is measured from the relation R= P/I2, where P is the power fed into the circuit and I is the current flowing through it. If the limiting errors in the measurement of power and current are respectively ± 1.0% and ± 1.0%, then what will be the limiting error in measurement of resistance ? ±0.5% ± 1.5% ± 3.0% ±3.5% ±0.5% ± 1.5% ± 3.0% ±3.5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For the AC bridge circuit shown in figure at balance the value of Rd will be (Rb/Rc).Ra. (Rc/Rb).Ra. (Ra/Rc).Rb. (Rc/Ra).Rb. (Rb/Rc).Ra. (Rc/Rb).Ra. (Ra/Rc).Rb. (Rc/Ra).Rb. ANSWER DOWNLOAD EXAMIANS APP
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