Measurement and Instrumentation Two voltmeters have the same range 0-400V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600V be applied across them, the readings are 360V and 240V 300V each 400V and 200V One of the meters out of the range and other 100V 360V and 240V 300V each 400V and 200V One of the meters out of the range and other 100V ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation An ammeter of range 0-25 A has a guaranteed accuracy of 1% of full-scale reading. The current measured by the ammeter is 5 A. The limiting error in the reading is 6% 4% 3% 5% 6% 4% 3% 5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The internal resistance of a milli-ammeter must be very low for high precision. minimum effect on the current in the circuit. high accuracy. high sensitivity. high precision. minimum effect on the current in the circuit. high accuracy. high sensitivity. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A megger is usually Hot-wire type instrument Moving coil type instrument Electro-static type instrument Moving iron type instrument Hot-wire type instrument Moving coil type instrument Electro-static type instrument Moving iron type instrument ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The total current I = I1 + I2 in a circuit is measured I1 = 150 ± 3A , I2 = 250 ± 4 A, where the limits of error are given as standard deviations. I is measured as (400 ± 3) A (400 ± 2.24) A (400 ±5) A (400 ± 1) A (400 ± 3) A (400 ± 2.24) A (400 ±5) A (400 ± 1) A ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is 50 V. 200 V. 25 V. 100 V. 50 V. 200 V. 25 V. 100 V. ANSWER DOWNLOAD EXAMIANS APP
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