Measurement and Instrumentation Alternating current is measured by Induction ammeter Moving iron repulsion type voltmeter Permanent magnet type ammeter Electrostatic ammeter Induction ammeter Moving iron repulsion type voltmeter Permanent magnet type ammeter Electrostatic ammeter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The three resistors R1, R2 and R3 have the following ratings: R1 = 25Ω ± 4%, R2 = 65 Ω ± 4%; R3 =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is 1% 2% 4% 3% 1% 2% 4% 3% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A CRO probe has an impedance of 500 kΩ in parallel with a capacitance of 10 pF. The probe is used to measure the voltage between P and Q as shown in figure. The measured voltage will be 3.53 V. 5 V. 4.38 V. 4.54 V. 3.53 V. 5 V. 4.38 V. 4.54 V. 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 The measurment of very low and very high frequencies is invariably done using a frequency counter in which one of the following? Period and frequency measurement modes respectively. Period measurment modes only. Frequency and period measurment modes, respectively. Frequency measurment modes only. Period and frequency measurement modes respectively. Period measurment modes only. Frequency and period measurment modes, respectively. Frequency measurment modes only. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Assertion (A) : Precision is a necessary prerequisiteof accuracy. Reason (R) : Precision guarantees accuracy. A is false bur R is true A is true but R is false Both A and R are true and R is the correct explanation of A Both A and R are true but R is NOT the correct explanation of A A is false bur R is true A is true but R is false Both A and R are true and R is the correct explanation of A Both A and R are true but R is NOT the correct explanation of A ANSWER DOWNLOAD EXAMIANS APP
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