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This set of Mechanical Measurements Multiple Choice Questions & Answers (MCQs) focuses on Mechanical Measurements Set 6
Q1 | A hot wire anemometer is a variable
- Inductance transducer
- Current transducer
- Capacitance transducer
- Frequency transducer
- Resistance transducer
Q2 | A piezoelectric crystal can be used to measure
- Temperature
- Velocity
- Acceleration
- Flow
- All of the above
Q3 | Rochelle salts are used
- As piezoelectric crystals
- For colour identification
- As dectors of gamma rays
- For polarisation
- For photography
Q4 | Which of the following can be used as sensing element for an instrument?
- Spring
- Proving ring
- Bourdon tube
- Diaphragm
- Any of the above
Q5 | Spot the odd one out
- Vacuum gage
- Pirani gage
- Strain gage
- None of the above
- Any of the above
Q6 | A geodimeter is based on the principle of
- Propagation of modulated light waves
- Optics
- Reflection of light waves
- X-rays
- Microwaves
Q7 | The lead zone is a certain pyrometer is 0.125 percent of span. The calibration is 400?C to 1000?C. What temperature change might occur before it is detected?
- 0.075?C
- 1.5?C
- 7.5?C
- 0.75?C
- 3?C
Q8 | Which of the following temperature is highest?
- Melting point of lead
- Melting point of steel
- Melting point of gold
- Melting point of zinc
- Melting point of tungsten
Q9 | Meter accuracy is determined by
- Least reading possible on the scale
- One fourth scale deflection
- Thickness of the pointer
- Half scale deflection
- Full scale deflection
Q10 | A pirani gauge is used to measure
- Pressures above 100 kg/cm2
- All pressures
- Pressure upto 100 kg/cm2
- Very low pressures
- Atmospheric pressure
Q11 | The freezing temperature of mercury is
- ? 230?C
- ? 139?C
- ? 39?C
- None of the above
- Any of the above
Q12 | Natural error in measurement may be due to
- Humidity
- Temperature
- Wind
- Gravity
- Any of the above
Q13 | The minimum change in the measured variable which produces an effective response of the instrument is known as
- Hysteresis
- Deviation
- Resolution sensitivity
- Accuracy
- Precision
Q14 | A polarograph is used for the analysis of
- Solids
- Liquids
- Gases
- All of the above
- None of the above
Q15 | Under force-current analogy, mass is considered analogous to
- Capacitance
- Reciprocal of resistance
- Current
- Resistance
- Reciprocal of capacitance
Q16 | Under force-voltage analogy, spring constant is considered analogous to
- Reciprocal of resistance
- Reciprocal of inductance
- Reciprocal of capacitance
- Reciprocal of impedance
- None of the above
Q17 | LVDT converts
- linear displacement into electrical signal
- pressure into electrical output
- strain into electrical output
- None of the above
- Any of the above
Q18 | A pitot tube converts
- Pressure head into velocity head
- Velocity head into pressure head
- Pressure head into temperature rise
- Velocity head into temperature rise
- None of the above
Q19 | Rosette strain gauges are used for measurement of strain in
- Horizontal direction only
- Vertical direction only
- Complex parts
- All of the above
Q20 | A rotameter can be used to measure
- Viscosity
- Flow
- Specific gravity
- Pressure of wind
- Rotation
Q21 | The main advantage of a CRO is
- it is a voltage sensitive instrument
- an inertialess beam of electrons acting as a pointer
- a fluorescent screen acts as scale
- None of the above
- Any of the above
Q22 | An error that under the same conditions will always be of the same size and sign is known as
- Mistake
- Detectable error
- Accidental error
- Systematic error
- Cumulative error
Q23 | Nitrocellulose cement is used with strain gauge as
- Base material
- Carrier
- Adhesive
- Lead
- None of the above
Q24 | Which of the following could be the source of random error in an instrument?
- Friction in instrument movement
- Backlash
- Mechanical vibrations
- Hysteresis in elastic members
- Any of the above
Q25 | Which of the following strain sensing elements has the highest value of gauge factor
- Advance
- Nichrome
- Manganin
- Soft iron
- Any of the above