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 20. 25.4. 54.2. 31.4. 20. 25.4. 54.2. 31.4. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A megger is usually Moving coil type instrument Electro-static type instrument Hot-wire type instrument Moving iron type instrument Moving coil type instrument Electro-static type instrument Hot-wire type instrument Moving iron type instrument ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is 1 mA. 3 mA. 2 mA. 4 mA. 1 mA. 3 mA. 2 mA. 4 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The difference between the measured value and the true value is called probable error relative error absolute error gross error probable error relative error absolute error gross error ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation How many fundamental units are there ? 7 8 4 6 7 8 4 6 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation _______ is used to measure the flow of air around aeroplane. Orifice. Anemometer. Venturimeter. nucleus. Orifice. Anemometer. Venturimeter. nucleus. ANSWER DOWNLOAD EXAMIANS APP