Measurement and Instrumentation How many time-base circuits does a dual face CRO can have? 2. 3. 4. 1. 2. 3. 4. 1. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which amplifier in used in an electronic amplifier? Butter amplifer. Wideband amplifier. Power amplifier. Differential amplifier. Butter amplifer. Wideband amplifier. Power amplifier. Differential amplifier. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Piezoelectronic accelerometer Should be used for low frequency. Should use a monitoring source at low input impedance. Should be used for high frequencies above 100 Hz. Has a low natural frequency. Should be used for low frequency. Should use a monitoring source at low input impedance. Should be used for high frequencies above 100 Hz. Has a low natural frequency. 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. Errorneous standardisation. Stray thermal emfs. Stray magnetic fields. Ripples of the DC supply. Errorneous standardisation. Stray thermal emfs. Stray magnetic fields. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be 1% 1.5% 0.5% 1.2% 1% 1.5% 0.5% 1.2% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be 260 V. 250 V. 248 V. 252 V. 260 V. 250 V. 248 V. 252 V. ANSWER DOWNLOAD EXAMIANS APP
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