RVUNL EE Electrical & Electronic Measurements Revision Quiz for AE & JE Exams Exams

Question 1

A resistance thermometer has a temperature coefficient of resonance 10^–2 per degree and its resistance 10^–2 per degree and its resistance of 0°C is 2.0 Ω. At what temperature is its resistance 2.1 Ω.

Question 2

A voltmeter with an internal resistance of 4750 Ω issued to measure the voltage across a resistance of 600 Ω connected in series with a DC series of internal resistance 400 Ω. What is the error in measurement?

Question 3

The DVM using the dual slope technique has a reference voltage of 100 V and the fixed time 1000 counts. What is the voltage indicated if the counter reads 762 on the downwards slope?

Question 4

The output of an LVDT is connected to a 5 V voltmeter through an amplifier having an amplification factor of 250. An output of 2 mV appears across the terminals of the LVDT when the core moves through a distance of 0.5 mm.

Calculate the resistivity of the LVDT.

Question 5

The voltage and current measured in a resistive network are 20V and 5A with accuracies of 2% and 1% respectively. Then the value of resistance of the network (in ohms) will be

Question 6

If a (0 – 3 mA) meter with a meter resistance of

is to be converted into a voltmeter of (0 – 3V), then the series resistance to be inserted is?

Question 7

A 200/1 A CT has primary winding current of 100 A and secondary winding current of 0.45 A . Then find ratio correction factor.

Question 8

A Q-meter is tuned into resonance at fundamental frequency with a resonating capacitance of 40pF. Resonance obtained at second harmonic with a resonating capacitance of 4pF. What is the self-capacitance of the coli?

Question 9

Full scale deflecting torque of 1A Moving Iron ammeter is

. The rate of change of self-inductance of the instrument at full scale in

is

Question 10

A resistor of value 4.7 kΩ is read as 4.65 kΩ in a measurement. Calculate the absolute error?

Question 11

A platinum resistance thermometer has resistance of 200 Ω at 20°C . What is the resistance at 100°C . If the temperature coefficient of resistance of the thermometer at 20°C is 0.004?

Question 12

An analog voltage signal whose highest frequency is 1 kHz is to be digitally coded with a resolution of 0.01% covering the voltage 0 – 10V. Choose the correct statements?

(i) The minimum sampling rate is 2 kHz

(ii) Minimum number of but in the digital code is 13

(iii) Analog value of LSB is 1 mV