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This set of Design of Machine Elements Multiple Choice Questions & Answers (MCQs) focuses on Design Of Machine Elements Set 13
Q1 | Modulus of resilience is defined as
- strain energy per unit volume
- strain energy per unit area
- independent of strain energy
- none of the mentioned
Q2 | In gear boxes and small size motors, rolling contact bearings are used.
- true
- false
Q3 | Deep groove ball bearings creates a lot of noise.
- yes
- they create very less noise
- depends on the application
- no reference frame for comparison is mentioned
Q4 | There is problem of alignment in deep groove ball bearings.
- yes
- no, it is self-aligning
- it aligns itself only in some particular cases
- can’t be determined
Q5 | Deep groove ball bearing has immense rigidity.
- true
- no it has point contact and hence low rigidity
- it has surface contact
- it has line contact
Q6 | Cylindrical load bearing has lower load capacity as compared to deep groove ball bearing.
- true
- false
Q7 | Angular contact bearing can take thrust as well as radial loads.
- true
- false
Q8 | In angular contact bearings, bearings are required to take thrust load in both directions.
- 1
- 4
- 2
- 3
Q9 | The angular play bearing must be mounted without axial play.
- yes
- little tolerance is adjusted
- little tolerance is necessary
- can’t be stated
Q10 | Taper rolling supports
- axial loads
- thrust loads
- both axial and thrust loads
- none of the mentioned
Q11 | Which of the following isn’t the property of taper roller?
- high rigidity
- easy dismantling
- take low radial and heavy loads
- all are the properties of tapper roller
Q12 | Which of the following cannot take radial load?
- cylindrical roller bearing
- taper roller bearing
- thrust ball bearing
- none of the listed
Q13 | Which of the following cannot tolerate misalignment?
- angular contact bearing
- cylinder roller bearing
- thrust ball bearings
- all of the listed
Q14 | Cylinder roller creates lesser noise than deep groove ball bearing.
- true
- false
Q15 | There are common types of bevel gears.
- 1
- 2
- 3
- 4
Q16 | Which of the following creates smoother motion?
- straight bevel gears
- spiral bevel gears
- equal for straight and spiral
- none of the mentioned
Q17 | When the pitch angle is greater than 90⁰, it is called external bevel gear.
- true
- internal
- helical
- herringbone
Q18 | If pitch angle is >90, the bevel gear is?
- internal
- external
- crown
- static
Q19 | Miter gears are the bevel gears mounted on shaft which are intersecting at angle greater than 90.
- true
- false
Q20 | Which of the following are characteristics of skew bevel gears?
- straight teeth
- mounted on parallel shafts
- mounted on intersecting shafts
- all of the mentioned
Q21 | Hypoid gears are based on surfaces that are paraboloids of revolution.
- true
- false
Q22 | When two hyperboloids are rotated, the resulting motion is
- sliding
- turning
- combination of turning and sliding
- rotary
Q23 | In hypoid bevel gears, shafts may continue past each other.
- true
- false
Q24 | Hypoid gears have the following characteristics.
- curved teeth
- mounted on non -parallel non intersecting shafts
- efficiency of 97%
- all of the mentioned
Q25 | Zerol gears are straight bevel gears with zero spiral angle.
- true
- false