Measurement and Instrumentation If the instrument is to have a wide range, the instrument should have Linear scale Logarithmic scale Square-law scale Exponential scale Linear scale Logarithmic scale Square-law scale Exponential scale ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The errors introduced by an instrument fall in which category ? Environmental errors Gross errors Systematic errors Random errors Environmental errors Gross errors Systematic errors Random errors ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Electrostatic instruments are normally used for Low voltage measurements Low current measurements High voltage measurements High current measurements Low voltage measurements Low current measurements High voltage measurements High current measurements ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of following are needed both for protection and metering? Power factor meters. Instrument transformer. Energy meter. Wattmeters. Power factor meters. Instrument transformer. 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 7.5 V, 2 ms. 10 V, 1 ms. 5 V, 2 ms. 5 V, 1 ms. 7.5 V, 2 ms. 10 V, 1 ms. 5 V, 2 ms. 5 V, 1 ms. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads 5 V. (2 + √3/2)V. 2 V. 0 V. 5 V. (2 + √3/2)V. 2 V. 0 V. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS