Multiple Choice Questions on Measurement and Instrumentation and Practice Test 1
There are 9 questions to be attended in 20 minutes. The questions are on Measurement and Instrumentation. The study material is provided along with the remarks for each answer after you complete the examination to help building knowledge on the subject. It may be better to study before attempting the mock drill so that by the time you reach 9th of the test, you score is around 80-90%. There are 9 question banks of 9 question each and you should attempt each of these question bank to test your preparedness for the final day of the RRB examination for SSE and JE to be held in Dec.
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There are 9 questions to be attended in 20 minutes. The questions are on Measurement and Instrumentation. Read the study material before making an attempt so that you build your confidence in the subject. This is the first of the series of 9 questions paper that will appear before the RRB examination for SSE and JE to be held in Dec.
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The Answer Key:
Sl No. Question Answer Remark 1 A pressure gauze is mentioned with range of 0-10 bar and inaccuracy of plus/minus 1% to full scale deflection. What is the range of value when measured 5 bar? 4.95-5.05 bar 2 Which one is not a fundamental unit? Magnetic Flux There are seven fundamental units namely Mass, Length, Time, Temperature, Luminous Intensity, Mole, Electric Current 3 Vernier Calliper is not used for the measurement of diameter of winding wire for winding of induction motor The diameter of a winding wire is around 0.1 to 0.2 mm and the least count of vernier calliper is much higher to measure such a small dimensions. Screw gauze is used for such purpose 4 Atmospheric pressure is equal to 1.01325 bar 1 atm = 1.01325 bar = 101325 Pa = 760.001 mm = 1.03 Kg/cm² = 10.1 N/cm² 5 Moving coil ammeters are suitable for measurement of DC only Moving coil ammeter works on the principle of magnetic deflection when a current coil is placed in a magnetic field and the current varies, the needle deflection also varies. The direction of needle deflection depends on the direction of current flow. Therefore suitable for DC application 6 Weirs are used for the measurement of flow rate of water in open channel Weirs are typically installed in open channels such as streams to determine discharge (flow rate). The basic principle is that discharge is directly related to the water depth in the weir. 7 The discovery made by the scientist relates to the process which is not a thermodynamically reversible process Joule The discovery by scientists other than Joule, relates to production of voltage when temperature gradient is applied on a junction of dissimilar materials. This property is widely used for measurement of temperature by the process of thermo-couple 8 Burden of an instrument transformer is defined as equal to VA Apparent power is the burden on a instrument transformer. For defining ratings of transformers, it is always apparent power handled by them that is kVA or MVA etc. 9 This is not a non-invasive flow meter Woltmeter The Woltmann meter comprises a rotor with helical blades inserted axially in the flow, much like a ducted fan; it can be considered a type of turbine flow meter -
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Question 1 of 9
1. Question
A pressure gauze is mentioned with range of 0-10 bar and inaccuracy of plus/minus 1% to full scale deflection. What is the range of value when measured 5 bar?
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Question 2 of 9
2. Question
Which one is not a fundamental unit?
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Question 3 of 9
3. Question
Vernier Calliper is not used for the measurement of
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Question 4 of 9
4. Question
Atmospheric pressure is equal to
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Question 5 of 9
5. Question
Moving coil ammeters are suitable for measurement of
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Question 6 of 9
6. Question
Weirs are used for the measurement of
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Question 7 of 9
7. Question
The discovery made by the scientist relates to the process which is not a thermodynamically reversible process
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Question 8 of 9
8. Question
Burden of an instrument transformer is defined as equal to
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Question 9 of 9
9. Question
This is not a non-invasive flow meter
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