Measurement and Instrumentation Which one of the following meters has maximum loading effect on the circuit under measurement ? 1000 Ω/volt 100 Ω/volt 10 MΩ/volt 1 MΩ/volt 1000 Ω/volt 100 Ω/volt 10 MΩ/volt 1 MΩ/volt ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation To the y input of a CRO a signal defined by 10sin100t is applied. To the x input the signal 10cos100t is fed. The gain for both x-channel and y-channel is the same. The screen shows sinisoidal. a straight line. a circle. an ellipse. sinisoidal. a straight line. a circle. an ellipse. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The limiting errors of measurement of power consumed by and the current passing through a resistance are ±1.5% and ±1% respectively. What is the limiting error ( in %) of measurement of resistance ? ±3.5% ± 1% ± 2.5% ± 1.5% ±3.5% ± 1% ± 2.5% ± 1.5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Resistance of a VARISTOR varies with Both Voltage and Temperature Voltage Temperature Current Both Voltage and Temperature Voltage Temperature Current ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When testing a coil having a resistance of 10 ohms, resonance occurred when the oscillator frequency was 10 MHz and rotating capacitor was set at 500/2π pF. The effective value of the Q of the coil is 25.4. 54.2. 31.4. 20. 25.4. 54.2. 31.4. 20. 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% 3% 2% 1% 4% 3% 2% 1% ANSWER DOWNLOAD EXAMIANS APP