Mechanical Measurements Set 4

Mechanical Engineering

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This set of Mechanical Measurements Multiple Choice Questions & Answers (MCQs) focuses on Mechanical Measurements Set 4

Q1 | The errors which form inexperience of the observer are known as
  • Personal errors
  • Mistakes
  • Training errors
  • Accidental errors
  • Handling errors
Answer: Mistakes
Q2 | The duty cycle of a pulse of width 2 micro sec and repetition frequency 4 kHz is
  • 0.5
  • 0.008
  • 0.05
  • 0.0006
  • 0.00008
Answer: 0.008
Q3 | Which of the following device cannot be used to measure pressure?
  • Pirani gauge
  • Strain gauge
  • LVDT
  • Manometer
  • Bolometer
Answer: Bolometer
Q4 | If a measuring tape is too long as compared to standard, the error will be known as
  • Manufacturing error
  • Natural error
  • Superficial error
  • Personal error
  • Instrumental error
Answer: Instrumental error
Q5 | An iron-constantan thermocouple can be used for the temperature
  • ?175?C to 900?C
  • ?250?V to 1500?C
  • ?373?C to 1800?C
  • 0?C to 2500?C
  • 0?C to 600?C
Answer: ?175?C to 900?C
Q6 | For measuring the temperature of a boiler furnace which one of the following is the appropriate thermometer?
  • Optical pyrometer
  • Bimetallic thermometer
  • Thermocouple
  • Resistance thermometer
  • Any of the above
Answer: Optical pyrometer
Q7 | The resistance of a strain gauge should be high
  • To increase sensitivity
  • To reduce hysteresis effect
  • To swamp out the effects of variations of resistance in other parts of the bridge
  • None of the above
  • 100 to 5000
Answer: To reduce hysteresis effect
Q8 | Which of the following transducer is used to translate linear motion into electrical signals?
  • Bourdons tube
  • LVDT
  • Bellows
  • Strain gauge
  • Thermistor
Answer: LVDT
Q9 | If an error under the same conditions will always be of the same size and sign, it is known as
  • Training errors
  • Systematic errors
  • Cumulative error
  • Either of (A) and (B) above
  • Either of (B) and (C) above
Answer: Either of (B) and (C) above
Q10 | The degree of fementation in brewing pressure can be measured by
  • Bolometer
  • Conductivity meter
  • pH meter
  • Smoke meter
  • Turbidity meter
Answer: pH meter
Q11 | Which of the following will be the most alkaline solution?
  • pH 4
  • pH 1
  • pH 7
  • pH 10
  • pH 14
Answer: pH 14
Q12 | McLeod gage is used to measure
  • pressure
  • vacuum
  • Flow rate
  • None of the above
  • Any of the above
Answer: pressure
Q13 | The standard oxygen point temperature is
  • 182.97?C
  • ?213.99?C
  • 163.45?C
  • ?182.27?C
  • 0?C
Answer: ?182.27?C
Q14 | In measurements using two strain gauges, the purpose of dummy strain gauge is
  • To unllify the errors due to temperature
  • Improve stability of the measuring system
  • Measure lateral strain
  • Increase the sensitivity of measuring system
  • None of the above
Answer: To unllify the errors due to temperature
Q15 | If a steam pressure of 10 kg/cm2 is to be measured, the range of pressure gauge should be
  • 0 to 100 kg kg/cm2
  • 0 to 10 kg kg/cm2
  • 0 to 20 kg kg/cm2
  • ?10 kg/cm2 to + 10 kg kg/cm2
  • 5 to 11 kg kg/cm2
Answer: 0 to 20 kg kg/cm2
Q16 | Which of the following can be used as thermal detector?
  • Thermistor
  • Pyrometer
  • Thermocouple
  • Resistance thermometer
  • Any of the above
Answer: Any of the above
Q17 | The electricl resistarice of a wire is
  • Directly proportional to diameter and inversely proportional to length
  • Directly proportional to length and inversely proportional to diameter
  • Directly proportional to length and diameter
  • Inversely proportional to resistance and length
  • None of the above
Answer: Directly proportional to diameter and inversely proportional to length
Q18 | The joints of a phosphor-bronze Bourdon tubes are
  • Welded
  • Brazed
  • Soldered
  • Jointed by adhesives
  • Screwed
Answer: Soldered
Q19 | Which of the following temperature is highest.
  • Melting point of gold
  • melting point of silver
  • melting point of steel
  • None of the above
  • Any of the above
Answer: None of the above
Q20 | Which of the following device can be used to give an indication for temperature changes?
  • Thermistor
  • Bourden gauge
  • Transistor
  • Thermocouple
  • LED
Answer: Thermocouple
Q21 | A simple ac amplifier may be used to amplify dc input through use of an additional circuit component known as
  • tuned amplifier
  • carrier
  • chopper
  • None of the above
  • Any of the above
Answer: chopper
Q22 | Positive displacement flow meters are
  • variable area flow meter
  • differential pressure flow meter
  • quantity flow meter
  • None of the above
  • Any of the above
Answer: quantity flow meter
Q23 | Which of the following meter is preferred for the measurement of pressure in a steam condenser?
  • Manometer
  • Kentometer
  • Pitot tube
  • Mcleod gauge
  • None of the above
Answer: Kentometer
Q24 | A rotameter is used to measure
  • velocity of liquids
  • pressure of gases
  • specific gravity of liquids
  • None of the above
  • Any of the above
Answer: velocity of liquids
Q25 | Which of the following transducer is preferred for measurements involving sound?
  • Piezoelectric pick up
  • Photoemissive cell
  • Volt box
  • Kundt's tube
  • Thermocouple
Answer: Piezoelectric pick up
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