This midterm exam for Mechanical Design, variant 1, assesses knowledge on gear design, material selection, and load factors in mechanical systems.
Seizure
Breakage
Pitting
Abrasive wear
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Worm gear drive produces much heat in the contact area
Worm gear drive requires to use nonferrous materials
Worm gear drive has high velocity ratio
Worm gear drive has less load carrying capacity
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Belt drive
Chain drive
Friction drive
Power screw
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Seizure
Pitting
Breakage
Abrasive wear
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Option 1
Option 2
Option 3
Option 4
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Contact stress in straight spur gears
Bending stress in bevel gears
Bending stress in worm gear drive
Bending stress in helical spur gears
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Friction drive
Gear drive
Chain drive
Belt drive
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Vibration
Breakdown and plastic deformation under applied load
Superficial deterioration in friction
Changing the shape and sizes under applied load
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Safety factor
Durability factor
Design number of stress cycle
Limit of endurance
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Bronze
Aluminium
Steel
Copper
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Design load factor
Dynamic load factor
Load concentration factor
Specific design load
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T1=12.5 N⋅m and T2=45.5 N⋅m
T1=55 N⋅m and T2=200 N⋅m
T1=110 N⋅m and T2=220 N⋅m
T1=50 N⋅m and T2=242 N⋅m
T1=12.5 N⋅m and T2=200 N⋅m
T1=55 N⋅m and T2=220 N⋅m
T1=110 N⋅m and T2=242 N⋅m
T1=55 N⋅m and T2=45.5 N⋅m
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Re=176.82 mm and dfe2=391.3 mm
Re=220.76 mm and dfe2=395.77 mm
Re=441.51 mm and dfe2=396.62 mm
Re=472.42 mm and dfe2=395.94 mm
Re=220.76 mm and dfe2=391.3 mm
Re=441.51 mm and dfe2=395.94 mm
Re=220.76 mm and dfe2=395.94 mm
Re=220.76 mm and dfe2=396.62 mm
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Aw=168 mm and γ= 11.3Ëš
Aw=200 mm and γ= 11.3Ëš
Aw=400 mm and γ= 78.5Ëš
Aw=336 mm and γ= 5.7Ëš
Aw=336 mm and γ= 11.3Ëš
Aw=200 mm and γ= 5.7Ëš
Aw=336 mm and γ= 78.5Ëš
Aw=200 mm and γ= 14.04Ëš
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Fr=4198.45 N and Fa=1203.89 N
Fr=1203.89 N and Fa=4198.45 N
Fr=12000 N and Fa=4367.64 N
Fr=4367.64 N and Fa=1203.89 N
Fr=12000 N and Fa=4198.45 N
Fr=12000 N and Fa=1203.89 N
Fr=4198.45 N and Fa=12000 N
Fr=4198.45 N and Fa=4367.64 N
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Contact stress in helical spur gears
Bending stress in straight spur gears
Contact stress in bevel gears
Contact stress in a worm gear drive
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N1= 1500 rpm and n2= 150 rpm
N1= 3000 rpm and n2= 600 rpm
N1= 750 rpm and n2= 150 rpm
N1= 1000 rpm and n2= 200 rpm
N1= 1500 rpm and n2= 600 rpm
N1= 1500 rpm and n2= 300 rpm
N1= 1000 rpm and n2= 150 rpm
N1= 1500 rpm and n2= 200 rpm
Fn=15962.66 N and Fa=5459.55 N
Fn=15000 N and Fa=5543.8 N
Fn=15231.4 N and Fa=2644.9 N
Fn=16208.9 N and Fa=2644.9 N
Fn=16208.9 N and Fa=5543.8 N
Fn=15962.66 N and Fa=2644.9 N
Fn=15000 N and Fa=2644.9 N
Fn=16208.9 N and Fa=5459.55 N
Aw=200 mm and dag=328 mm
Aw=410 mm and dag=328 mm
Aw=123 mm and dag=320 mm
Aw=205 mm and dag=336 mm
Aw=410 mm and dag=320 mm
Aw=205 mm and dag=328 mm
Aw=200 mm and dag=336 mm
Aw=205 mm and dag=338 mm
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