McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 101. |
In general, in which part of the scale does the pointer indicate most accurately? |
| A. | In the last third of the scale |
| B. | Around full capacity of the scale |
| C. | In the second quarter of the scale |
| D. | In the first quarter of the scale |
| E. | Around middle of the scale |
| Answer» A. In the last third of the scale | |
| 102. |
Ionisation gauges can be used for measurement of pressures as low as |
| A. | 0.0001 micron |
| B. | 0.01 micron |
| C. | 0.001 micron |
| D. | 0.1 micron |
| E. | 0.000001 micron |
| Answer» E. 0.000001 micron | |
| 103. |
A LVDT has |
| A. | Two primary coils and two secondary coils |
| B. | Two primary coils and one secondary coil |
| C. | 15?C |
| D. | One primary coil and one secondary coil |
| E. | One primary coil and two secondary coils |
| Answer» D. One primary coil and one secondary coil | |
| 104. |
Under force voltage analogy mass is considered analogous to |
| A. | Industance |
| B. | Capacitance |
| C. | Resistance |
| D. | Current source |
| E. | Admittance |
| Answer» A. Industance | |
| 105. |
Piezoelectric crystal possesses the ability to convert |
| A. | electrical energy into mechanical energy |
| B. | strain energy into electrical energy |
| C. | mechanical energy into electrical energy |
| D. | all the above |
| E. | Any of the above |
| Answer» D. all the above | |
| 106. |
Which of the following is an indirect pressure measuring device? |
| A. | Manometer |
| B. | Ionisation gauge |
| C. | Capsules |
| D. | Bourdon tube |
| E. | Flat diaphragm |
| Answer» B. Ionisation gauge | |
| 107. |
In the process of manufacture of copper sheets, the thickness of the sheet is to be continuously monitored. Which transducer will be most suitable for this purpose? |
| A. | LVDT |
| B. | Strain gauge |
| C. | Photocell |
| D. | Any of the above |
| E. | None of the above |
| Answer» A. LVDT | |
| 108. |
Which of the following is not a non-contact type thermometer? |
| A. | Disappearing filament type pyrometer |
| B. | Colour pyrometer |
| C. | Photoelectric tube pyrometers |
| D. | Total intensity radio meters |
| E. | Suction pyrometer |
| Answer» E. Suction pyrometer | |
| 109. |
Thermocouple used in radio micrometer and thermo-galvanometer is |
| A. | Antimony - bismuth couple |
| B. | Copper constant couple |
| C. | Copper iron couple |
| D. | Iron - copper couple |
| E. | None of the above |
| Answer» A. Antimony - bismuth couple | |
| 110. |
Pico x tera |
| A. | 105 ergs |
| B. | 100,000 |
| C. | 1 |
| D. | 1000 |
| E. | 1,000,000,000 |
| Answer» C. 1 | |
| 111. |
A copper-constantan thermocouple can be used for the range of temperature from |
| A. | ?212?C to 1000?C |
| B. | 0?C to 250?C |
| C. | ?175?C to 350?C |
| D. | 100?C to 250?C |
| E. | ?50?C to 300?C |
| Answer» C. ?175?C to 350?C | |
| 112. |
An accelerometer has a seismic mass of 0.05 kg and a spring constant of 3000 N/m. Maximum mass displacement is |
| A. | 120 m/s2 |
| B. | 2400 m/s2 |
| C. | 600 m/s2 |
| D. | 300 m/s2 |
| E. | 1200 m/s2 |
| Answer» E. 1200 m/s2 | |
| 113. |
Under force voltage analogy, viscous friction coefficient is not considered analogous to |
| A. | Resistance |
| B. | Multual inductance |
| C. | Capacitance |
| D. | Current |
| E. | Charge |
| Answer» A. Resistance | |
| 114. |
In a CRO, ouput from which type of oscillator is applied to the horizontal deflection plate |
| A. | square wave oscillator |
| B. | sinusoidal wave oscillator |
| C. | sawtooth wave oscillator |
| D. | None of the above |
| E. | Any of the above |
| Answer» C. sawtooth wave oscillator | |
| 115. |
Under the voltage analogy, charge is considered analogous to |
| A. | Momentum |
| B. | Mass |
| C. | Displacement |
| D. | Velocity |
| E. | Force |
| Answer» C. Displacement | |
| 116. |
Main advantage of electrical measuring system over mechanical system is |
| A. | mass inertia effects are negligiole |
| B. | minimum effects of friction |
| C. | remote indication is possoble |
| D. | None of the above |
| E. | Any of the above |
| Answer» B. minimum effects of friction | |
| 117. |
Pascal is the unit of |
| A. | force |
| B. | torque |
| C. | energy |
| D. | None of the above |
| E. | Any of the above |
| Answer» D. None of the above | |
| 118. |
Constantan is an alloy of |
| A. | Nickel and copper |
| B. | Aluminium and zinc |
| C. | Nickel and silver |
| D. | Aluminium and copper |
| E. | Lead and zind |
| Answer» A. Nickel and copper | |
| 119. |
A strain gauge with high sensitivity and high gauge factor is |
| A. | Nichrome transducer |
| B. | Platinum-tungsten alloy transducer |
| C. | Semi-conductor strain gauge transducer |
| D. | Stability and dynaloy strain gauge transducer. |
| E. | Difficulties in connections and high cost of auxiliary equipment |
| Answer» C. Semi-conductor strain gauge transducer | |
| 120. |
Flow of water in a pipe of 250 cm diameter can be measured by |
| A. | Pitot tube |
| B. | Rotameter |
| C. | Manometer |
| D. | Venturimeter |
| E. | Orifice plate |
| Answer» A. Pitot tube | |
| 121. |
Which of the following instrument is suitable for measuring the temperature of a red hot moving material like molten steel or molten cst iron? |
| A. | Gas thermometer |
| B. | Thermistor |
| C. | Thermocouple |
| D. | Radiation pyrometer |
| E. | All of the above |
| Answer» D. Radiation pyrometer | |
| 122. |
Under the conditions when the depth of water is too much, to make a continuous record of the depth of water below a boat or ship, the instrument generally used is |
| A. | sound box |
| B. | fathometer |
| C. | d B meter |
| D. | None of the above |
| E. | Any of the above |
| Answer» B. fathometer | |
| 123. |
Which of the following is an indirect method of pressure measurement? |
| A. | Mcleod gauge |
| B. | Thermal conductivity gauge |
| C. | Ionisation gauge |
| D. | Radioactive vacuum gauge |
| E. | All of the above |
| Answer» E. All of the above | |
| 124. |
Basically D' Arsonwal movement is |
| A. | voltage sensitive |
| B. | current sensitive |
| C. | power sensitive |
| D. | None of the above |
| E. | Any of the above |
| Answer» B. current sensitive | |
| 125. |
Manganin does not contain |
| A. | Zinc |
| B. | Copper |
| C. | Manganese |
| D. | Nickel |
| E. | All of the above |
| Answer» A. Zinc | |
| 126. |
A hot wire anemometer is a variable |
| A. | Inductance transducer |
| B. | Current transducer |
| C. | Capacitance transducer |
| D. | Frequency transducer |
| E. | Resistance transducer |
| Answer» E. Resistance transducer | |
| 127. |
A piezoelectric crystal can be used to measure |
| A. | Temperature |
| B. | Velocity |
| C. | Acceleration |
| D. | Flow |
| E. | All of the above |
| Answer» C. Acceleration | |
| 128. |
Rochelle salts are used |
| A. | As piezoelectric crystals |
| B. | For colour identification |
| C. | As dectors of gamma rays |
| D. | For polarisation |
| E. | For photography |
| Answer» A. As piezoelectric crystals | |
| 129. |
Which of the following can be used as sensing element for an instrument? |
| A. | Spring |
| B. | Proving ring |
| C. | Bourdon tube |
| D. | Diaphragm |
| E. | Any of the above |
| Answer» E. Any of the above | |
| 130. |
Spot the odd one out |
| A. | Vacuum gage |
| B. | Pirani gage |
| C. | Strain gage |
| D. | None of the above |
| E. | Any of the above |
| Answer» C. Strain gage | |
| 131. |
A geodimeter is based on the principle of |
| A. | Propagation of modulated light waves |
| B. | Optics |
| C. | Reflection of light waves |
| D. | X-rays |
| E. | Microwaves |
| Answer» A. Propagation of modulated light waves | |
| 132. |
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? |
| A. | 0.075?C |
| B. | 1.5?C |
| C. | 7.5?C |
| D. | 0.75?C |
| E. | 3?C |
| Answer» D. 0.75?C | |
| 133. |
Which of the following temperature is highest? |
| A. | Melting point of lead |
| B. | Melting point of steel |
| C. | Melting point of gold |
| D. | Melting point of zinc |
| E. | Melting point of tungsten |
| Answer» E. Melting point of tungsten | |
| 134. |
Meter accuracy is determined by |
| A. | Least reading possible on the scale |
| B. | One fourth scale deflection |
| C. | Thickness of the pointer |
| D. | Half scale deflection |
| E. | Full scale deflection |
| Answer» E. Full scale deflection | |
| 135. |
A pirani gauge is used to measure |
| A. | Pressures above 100 kg/cm2 |
| B. | All pressures |
| C. | Pressure upto 100 kg/cm2 |
| D. | Very low pressures |
| E. | Atmospheric pressure |
| Answer» D. Very low pressures | |
| 136. |
The freezing temperature of mercury is |
| A. | ? 230?C |
| B. | ? 139?C |
| C. | ? 39?C |
| D. | None of the above |
| E. | Any of the above |
| Answer» C. ? 39?C | |
| 137. |
Natural error in measurement may be due to |
| A. | Humidity |
| B. | Temperature |
| C. | Wind |
| D. | Gravity |
| E. | Any of the above |
| Answer» E. Any of the above | |
| 138. |
The minimum change in the measured variable which produces an effective response of the instrument is known as |
| A. | Hysteresis |
| B. | Deviation |
| C. | Resolution sensitivity |
| D. | Accuracy |
| E. | Precision |
| Answer» C. Resolution sensitivity | |
| 139. |
A polarograph is used for the analysis of |
| A. | Solids |
| B. | Liquids |
| C. | Gases |
| D. | All of the above |
| E. | None of the above |
| Answer» A. Solids | |
| 140. |
Under force-current analogy, mass is considered analogous to |
| A. | Capacitance |
| B. | Reciprocal of resistance |
| C. | Current |
| D. | Resistance |
| E. | Reciprocal of capacitance |
| Answer» A. Capacitance | |
| 141. |
Under force-voltage analogy, spring constant is considered analogous to |
| A. | Reciprocal of resistance |
| B. | Reciprocal of inductance |
| C. | Reciprocal of capacitance |
| D. | Reciprocal of impedance |
| E. | None of the above |
| Answer» B. Reciprocal of inductance | |
| 142. |
LVDT converts |
| A. | linear displacement into electrical signal |
| B. | pressure into electrical output |
| C. | strain into electrical output |
| D. | None of the above |
| E. | Any of the above |
| Answer» A. linear displacement into electrical signal | |
| 143. |
A pitot tube converts |
| A. | Pressure head into velocity head |
| B. | Velocity head into pressure head |
| C. | Pressure head into temperature rise |
| D. | Velocity head into temperature rise |
| E. | None of the above |
| Answer» B. Velocity head into pressure head | |
| 144. |
Rosette strain gauges are used for measurement of strain in |
| A. | Horizontal direction only |
| B. | Vertical direction only |
| C. | Complex parts |
| E. | All of the above |
| Answer» C. Complex parts | |
| 145. |
A rotameter can be used to measure |
| A. | Viscosity |
| B. | Flow |
| C. | Specific gravity |
| D. | Pressure of wind |
| E. | Rotation |
| Answer» B. Flow | |
| 146. |
The main advantage of a CRO is |
| A. | it is a voltage sensitive instrument |
| B. | an inertialess beam of electrons acting as a pointer |
| C. | a fluorescent screen acts as scale |
| D. | None of the above |
| E. | Any of the above |
| Answer» B. an inertialess beam of electrons acting as a pointer | |
| 147. |
An error that under the same conditions will always be of the same size and sign is known as |
| A. | Mistake |
| B. | Detectable error |
| C. | Accidental error |
| D. | Systematic error |
| E. | Cumulative error |
| Answer» A. Mistake | |
| 148. |
Nitrocellulose cement is used with strain gauge as |
| A. | Base material |
| B. | Carrier |
| C. | Adhesive |
| D. | Lead |
| E. | None of the above |
| Answer» C. Adhesive | |
| 149. |
Which of the following could be the source of random error in an instrument? |
| A. | Friction in instrument movement |
| B. | Backlash |
| C. | Mechanical vibrations |
| D. | Hysteresis in elastic members |
| E. | Any of the above |
| Answer» E. Any of the above | |
| 150. |
Which of the following strain sensing elements has the highest value of gauge factor |
| A. | Advance |
| B. | Nichrome |
| C. | Manganin |
| D. | Soft iron |
| E. | Any of the above |
| Answer» D. Soft iron | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.