Measurement and Instrumentation A Lissajous pattern on an oscilloscope has 5 horinzontal tangencies and 2 vertical tangencies. The frequency of horizontal input is 100 Hz. The frequency of the vertical will be 500 Hz. 400 Hz. 250 Hz. 625 Hz. 500 Hz. 400 Hz. 250 Hz. 625 Hz. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In DC potentiometer measurments, a second reading is often taken after reversing the polarities of the DC supply and the unknown voltage and the average of the two reading is taken. This is with a view of eliminate the effects of Ripples of the DC supply. Stray magnetic fields. Errorneous standardisation. Stray thermal emfs. Ripples of the DC supply. Stray magnetic fields. Errorneous standardisation. Stray thermal emfs. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Direct method is used to measure Voltage Temperature Pressure Length Voltage Temperature Pressure Length ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The error of an instrument is normally given as a percentage of Measured value Mean value Rms value Full-scale value Measured value Mean value Rms value Full-scale value ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit. 1 is true but 2 is false. 1 is false but 2 is true. Both 1 and 2 are true. Both 1 and 2 are false. 1 is true but 2 is false. 1 is false but 2 is true. Both 1 and 2 are true. Both 1 and 2 are false. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as 3600 rev/KWh. 1000 rev/KWh. 3750 rev/KWh. 960 rev/KWh. 3600 rev/KWh. 1000 rev/KWh. 3750 rev/KWh. 960 rev/KWh. ANSWER DOWNLOAD EXAMIANS APP
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