Measurement and Instrumentation To measure 5 volts, if one selects a 0-100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to ± 7.5 % ± 1.5% ± 2.5% ± 20% ± 7.5 % ± 1.5% ± 2.5% ± 20% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A voltmeter has 100 scale divisions and can measure up to 100 V. Each division can be read to ½ division. The resolution of the voltmeter is 1 V 2 V 0.5 V 1.5 V 1 V 2 V 0.5 V 1.5 V 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 ? ± 3.0% ±3.5% ± 1.5% ±0.5% ± 3.0% ±3.5% ± 1.5% ±0.5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit. 1 is true but 2 is false. Both 1 and 2 are false. 1 is false but 2 is true. Both 1 and 2 are true. 1 is true but 2 is false. Both 1 and 2 are false. 1 is false but 2 is true. Both 1 and 2 are true. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Ratio of readings of two wattmeter connected to measure power in a balanced 3-phase load is 5:3 and the load is inductive. The power factor at load is 0.6 lag. 0.6 lead. 0.917 lag. 0.917 lead. 0.6 lag. 0.6 lead. 0.917 lag. 0.917 lead. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In flux meter, the controlling torque is produced by not provided at all. spring. weight attached to the moving coil. crossed coil mechanism. not provided at all. spring. weight attached to the moving coil. crossed coil mechanism. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS