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 2% 4% 1% 3% 2% 4% 1% 3% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of following are needed both for protection and metering? Instrument transformer. Power factor meters. Energy meter. Wattmeters. Instrument transformer. Power factor meters. Energy meter. Wattmeters. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The time/div and voltage axes of an oscilloscope have been creased. A student connects a 1 KHz, 5 V P-P square wave calibrition pulse to channel-1 of the scope and observes the screen to be as shown in the upper trace of figure. An unknown signal is connected to channel-2 (lower trace) of the scope. If the time/div and V/div on both channels are the same, the amplitude (P-P) and period of the unknown signal are respectively 10 V, 1 ms. 5 V, 2 ms. 7.5 V, 2 ms. 5 V, 1 ms. 10 V, 1 ms. 5 V, 2 ms. 7.5 V, 2 ms. 5 V, 1 ms. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The spring material used in a spring control device should have the following property. Should have low specific resistance Most be of low temperature co-efficient All of the listed here Should non magnetic Should have low specific resistance Most be of low temperature co-efficient All of the listed here Should non magnetic ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Schering bridge is used to measure which of the following? Inductance. Frequency. Resistance. Capacitance. Inductance. Frequency. Resistance. Capacitance. 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 Both A and R are true but R is NOT the correct explanation of A Both A and R are true and R is the correct explanation of A A is true but R is false A is false bur R is true Both A and R are true but R is NOT the correct explanation of A Both A and R are true and R is the correct explanation of A A is true but R is false ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS