MD2 FLYWHEEL SPEING
問題一覧
1
A heavy rotating body which serves as a reservoir for absorbing and redistributing kinetic energy.
flywheel
2
Which of the following is not the use of spring?
measure the thickness
3
The ratio of mean diameter of coil over the coil diameter is known as
spring index
4
The overall length of the spring when it is compressed until all adjacent coils touched.
solid length
5
The length of coil spring under no load is known as
free length
6
In general, steel springs are made of relatively high carbon steel usually
more than 0.5%
7
When heat-treated wire is coiled cold it should be stress relieved for bending stresses after cooling by being heated at some
500°F
8
A low cost spring material, suitable where service is not severe and dimensional precision is not needed.
hard drawn wire spring
9
A hard drawn also 80% reduction but it is made of high- grade steel.
music wire
10
A spring wire with good quality for impact loads and moderately high temperature is known as
chromium-silicon
11
A type of coil where the helical coil is wrapped into a circle forming an annular ring.
garter spring
12
A type of spring where thin flat strip wound up on itself as a plane spiral, usually anchored at the inside.
motor spring
13
A type of spring made in the form of a dished washed
belleville spring
14
In laminated spring the strips are provided in different lengths for
economy
15
An elastic stored energy machine element that when released, will recover its basic form.
spring
16
When a spring is made of ductile material the curvature factor would be
unity
17
The solid length plus the clearance plus the maximum
deflection is called
free length
18
The majority of coils springs are made of coll tempered carbon steel wire containing carbon.
0.60 to 0.70
19
Experimental results indicate that the actual frequency of the spring is from
10 to 15%
20
According to W.M. Griffith the critical frequency of the spring should behold at least _____ frequency of application of a periodic load.
20
21
The actual number of coil is ground ends.
n+2
22
The solid length of squared ends is
(n+3)d
23
The free length of ground ends is
np
24
The shortest length for the spring during normal operation is known as
operating length
25
The relationship between the force exerted by a spring and its deflection is called
spring rate
26
The ratio of the mean diameter of the spring to the wire diameter is called
spring index
27
Refers to the axial distance from a point on one coll to the corresponding point on the next adjacent coll.
pitch
28
The spring index for general industrial uses should be
8 to 10
29
The spring index of valve and clutch is
5
30
Refers to the space between adjacent coils when the spring is compressed to its operating length.
coil clearance
31
The most practical spring designs produce a pitch angle is less than
12°
32
Engine valves get shut by means of
valve spring
33
Which of the following material to be used for leaf and coil springs?
AISI 4063
34
The length of a coil spring times the effective number of coil is called
active length
35
For springs subjected to light service, the factor of safety of _____ is suggested.
1.5
36
Refers to a flat or curved made of thin superimposed plates and forming a cantilever or beam of uniform strength.
laminated spring
37
Cross wire grooves are types which
absorb shocks because of road unevenness
38
The _____ of parallel connection of spring is always constant
elongation
39
Speedometer drive is generally taken from
front wheel
40
The device for smoothing out the power impulses from the engine is known as
flywheel
41
Typical hub length falls between
1.25D to 2.4D
42
The recommended coefficient of fluctuation of flywheels for punching, shearing, and pressing machine is
0.05 to 0.10
43
Attached to the rear end of the crankshaft is the
flywheel
44
Flywheel is also known as
balance wheel
45
The kind of energy stored in the flywheel is
kinetic energy
46
The function of the flywheel is
all of the above
47
In many flywheel designs about____ per cent of the weight is concentrated in the hub and arms.
30
48
A large rotary machine parts whose function is to store energy and to produce uniform angular velocity of the shaft of reciprocating engine is known as
flywheel
49
A massive wheel, which by its inertia assists in securing uniform motion of machinery by resisting sudden changes of speed.
flywheel
50
The function of a flywheel is to
complete the unuseful stroke
問題一覧
1
A heavy rotating body which serves as a reservoir for absorbing and redistributing kinetic energy.
flywheel
2
Which of the following is not the use of spring?
measure the thickness
3
The ratio of mean diameter of coil over the coil diameter is known as
spring index
4
The overall length of the spring when it is compressed until all adjacent coils touched.
solid length
5
The length of coil spring under no load is known as
free length
6
In general, steel springs are made of relatively high carbon steel usually
more than 0.5%
7
When heat-treated wire is coiled cold it should be stress relieved for bending stresses after cooling by being heated at some
500°F
8
A low cost spring material, suitable where service is not severe and dimensional precision is not needed.
hard drawn wire spring
9
A hard drawn also 80% reduction but it is made of high- grade steel.
music wire
10
A spring wire with good quality for impact loads and moderately high temperature is known as
chromium-silicon
11
A type of coil where the helical coil is wrapped into a circle forming an annular ring.
garter spring
12
A type of spring where thin flat strip wound up on itself as a plane spiral, usually anchored at the inside.
motor spring
13
A type of spring made in the form of a dished washed
belleville spring
14
In laminated spring the strips are provided in different lengths for
economy
15
An elastic stored energy machine element that when released, will recover its basic form.
spring
16
When a spring is made of ductile material the curvature factor would be
unity
17
The solid length plus the clearance plus the maximum
deflection is called
free length
18
The majority of coils springs are made of coll tempered carbon steel wire containing carbon.
0.60 to 0.70
19
Experimental results indicate that the actual frequency of the spring is from
10 to 15%
20
According to W.M. Griffith the critical frequency of the spring should behold at least _____ frequency of application of a periodic load.
20
21
The actual number of coil is ground ends.
n+2
22
The solid length of squared ends is
(n+3)d
23
The free length of ground ends is
np
24
The shortest length for the spring during normal operation is known as
operating length
25
The relationship between the force exerted by a spring and its deflection is called
spring rate
26
The ratio of the mean diameter of the spring to the wire diameter is called
spring index
27
Refers to the axial distance from a point on one coll to the corresponding point on the next adjacent coll.
pitch
28
The spring index for general industrial uses should be
8 to 10
29
The spring index of valve and clutch is
5
30
Refers to the space between adjacent coils when the spring is compressed to its operating length.
coil clearance
31
The most practical spring designs produce a pitch angle is less than
12°
32
Engine valves get shut by means of
valve spring
33
Which of the following material to be used for leaf and coil springs?
AISI 4063
34
The length of a coil spring times the effective number of coil is called
active length
35
For springs subjected to light service, the factor of safety of _____ is suggested.
1.5
36
Refers to a flat or curved made of thin superimposed plates and forming a cantilever or beam of uniform strength.
laminated spring
37
Cross wire grooves are types which
absorb shocks because of road unevenness
38
The _____ of parallel connection of spring is always constant
elongation
39
Speedometer drive is generally taken from
front wheel
40
The device for smoothing out the power impulses from the engine is known as
flywheel
41
Typical hub length falls between
1.25D to 2.4D
42
The recommended coefficient of fluctuation of flywheels for punching, shearing, and pressing machine is
0.05 to 0.10
43
Attached to the rear end of the crankshaft is the
flywheel
44
Flywheel is also known as
balance wheel
45
The kind of energy stored in the flywheel is
kinetic energy
46
The function of the flywheel is
all of the above
47
In many flywheel designs about____ per cent of the weight is concentrated in the hub and arms.
30
48
A large rotary machine parts whose function is to store energy and to produce uniform angular velocity of the shaft of reciprocating engine is known as
flywheel
49
A massive wheel, which by its inertia assists in securing uniform motion of machinery by resisting sudden changes of speed.
flywheel
50
The function of a flywheel is to
complete the unuseful stroke