Measurement and Instrumentation The calibration of a voltmeter can be carried out by using A function generator. An ammeter. A potentiometer. A frequency meter. A function generator. An ammeter. A potentiometer. A frequency meter. 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 4% 1% 2% 3% 4% 1% 2% 3% 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 Stray thermal emfs. Ripples of the DC supply. Stray magnetic fields. Errorneous standardisation. Stray thermal emfs. Ripples of the DC supply. Stray magnetic fields. Errorneous standardisation. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Assertion (A): A hot wire ammeter has a cramped scale. Reason (R): The heat is proportional to square of current. Both A and R are true and R is not correct explanation of A. A is false and R is ture. A is ture and R is false. Both A and R are true and R is correct explanation of A. Both A and R are true and R is not correct explanation of A. A is false and R is ture. A is ture and R is false. Both A and R are true and R is correct explanation of A. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In measurement system, the function of the signal manipulating elements is to change the quantity under measurement to an analogues signal. change the magnitude of the input signal while retaining its identity. to perform non liner operation like clipping filtering, chopping and clamping. to perform linear operation like addition and multiplication. change the quantity under measurement to an analogues signal. change the magnitude of the input signal while retaining its identity. to perform non liner operation like clipping filtering, chopping and clamping. to perform linear operation like addition and multiplication. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The use of __________________ instruments is merely confined within laboratories as standardizing instrument. integrating. indicating. absolute. recording. integrating. indicating. absolute. recording. ANSWER DOWNLOAD EXAMIANS APP
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