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ESE 2019 Technical ( Electronic Measurements and Instrumentation: Quiz 4 )
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Question 1
Optical Pyrometer is generally used to measure
Question 2
A platinum resistance thermometer has a resistance of 140.5Ω at 100℃ and 100.0Ω at 0℃. When it is in contact with a hot gas, its resistance becomes 305.3Ω. The temperature of the gas is (Assuming temperature coefficient of platinum is 0.004/℃) close to
Question 3
An LVDT has the following specifications:
Input = 6.3 V,
Output = 5.2 V,
range ± 1.25 cm
Then the output voltages produced due to core movement from +1.1 cm to -0.4 cm will be respectively
Input = 6.3 V,
Output = 5.2 V,
range ± 1.25 cm
Then the output voltages produced due to core movement from +1.1 cm to -0.4 cm will be respectively
Question 4
A 1 m length wire has a resistance of 150 Ω. When it is subjected to strain, its length becomes 1.01 m. The measurement is conducted by a strain gauge whose gauge factor is 2. The change in resistance of the wire is
Question 5
An LVDT (linear variable differential transformer) produces an output of 24 V rms for a displacement of 25 x 10-3 cm. This voltage is measured with a 5 V full-scale voltmeter with 100 major divisions, each major division readable to 0.2 divisions. The resolution of the voltmeter is
Question 6
The strain gauge should have
1. High gauge factor
2. Low resistance temperature coefficient
3. High resistance
Which of the above statements are correct?
1. High gauge factor
2. Low resistance temperature coefficient
3. High resistance
Which of the above statements are correct?
Question 7
Which one of the following quantities can be measured with the help of the piezoelectric crystal?
Question 8
Measurement of pressure can be done by using wire, foil or semiconductor type Strain Gauges. The disadvantage of the semiconductor type of Strain Gauge compared to the other two is in terms of
Question 9
If R, L and C are the parameters of a resistor, what is the condition for the resistor to be non-inductive?
Question 10
Two milli ammeters with full scale currents of 1 mA and 10 mA are connected in parallel and they read 0.5 mA and 2.5 mA respectively. Their internal resistances are in the ratio of
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Sep 23ESE & GATE EC
