ESE-2018 Electrical Engineering Quiz 27

Attempt now to get your rank among 486 students!

Question 1

A D’ Arsonval movement with internal resistance and full-scale current of 1 mA is to be converted into 0-10 V range voltmeter. What is the required resistance?

• A
• B
• C
• D

Question 2

A moving coil instrument gives full-scale deflection for 1 mA and has a resistance of If a resistance of is connected in parallel with the instrument, what is the maximum current it can measure?

• A5 mA
• B50 mA
• C100 mA
• D10 mA

Question 3

A 10 V range voltmeter is rated for full-scale current. The total resistance of the voltmeter is

• A
• B
• C
• D

Question 4

A digit voltmeter is used for measurements. It would display the voltage value 0.3861 2 on a 10 V range as

• A0.3861
• B0.386
• C0.38
• D0.38610

Question 5

Consider the following statements regarding precision in measurements of a quantity:
1) Precision is the measure of the spread of the incident errors.
2) precision is independent of the realizable correctness of the measurement.
3) Precision is usually described in terms of number of digits used in the measurement by a digital instrument.
Which of the above statements are correct?

• A1, 2 and 3
• B1 and 2 only
• C1 and 3 only
• D2 and 3 only

Question 6

A capacitance transducer uses two quartz diaphragms of area 750 mm2 separated by a distance 3.5 mm. The capacitance is 370 pF. When a pressure of 900 kN/m2 is applied, the deflection is 0-6 mm. The capacitance at this pressure would be

• A619 pF
• B447 pF
• C325 pF
• D275 pF

Question 7

A megger is an instrument used for measuring

• AVery high voltages
• BVery low voltages
• CVery high resistances
• DVery low resistances

Question 8

The bridge circuit shown can be used to measure unknown lossy capacitor C_x with resistance R_x . At balance.

Where R₁, R₂, C₁ and C₃ can be assumed ideal components 

• A
• B
• C
• D

• 486 attempts
• 4 upvotes
• 14 comments