What is the major element or component of a babbitt metal? (Day 41, Q1)
A. Antimony
B. Tin
C. Lead
D. Zinc
E. Copper
Select an answer
Explanation
Babbitt metal, used for bearings, typically has tin as its primary component.
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What is the major element or component of a babbitt metal? (Day 41, Q1)
B
What can a body in static equilibrium NOT have? (Day 41, Q2)
C
What is the standard pipe color for acid? (Day 41, Q3)
A
Which element acts as a deoxidizer and promotes fine grain in steel melting? (Day 41, Q4)
A
How does cold working typically affect the condition of steel? (Day 41, Q5)
A
What measuring instrument is used to check the hardness of rubber and plastic? (Day 41, Q6)
B
Which operation produces a circular hole by removing solid metal? (Day 41, Q7)
A
What are the large pipes in water tube boilers that lead to smaller consuming points called? (Day 41, Q8)
A
According to the manual, which bearing material is self-lubricated and has a low coefficient of friction? (Day 41, Q9)
D
What is a simple term for force? (Day 41, Q10)
D
What metal characteristic allows it to absorb extreme deformation without rupture? (Day 41, Q11)
D
What is the ideal minimum and maximum limit of teeth for sprockets in operation? (Day 41, Q12)
A
What is the weight of an AISI 1030 steel shaft (6 inches dia x 24 inches long)? (Day 41, Q13)
A
Which cutting lubricant is used for drilling, reaming, and tapping aluminum and copper? (Day 41, Q14)
D
What is the term for a material's ability to resist deformation under stress? (Day 41, Q15)
B
In transmission shafting design, what is the maximum allowable twist per foot of length? (Day 41, Q16)
C
What is the dimensional variation allowed to secure differences of fits between mating parts? (Day 41, Q17)
A
What is high temperature surface heating followed by quenching called? (Day 41, Q18)
C
The ideal design center distance for a chain drive is about eighty ________. (Day 41, Q19)
B
Internal or residual stress in heavy welding or casting can be remedied by: (Day 41, Q20)
C
What is the carbon content range for SAE 1030 Carbon steel? (Day 41, Q21)
A
What is the average carbon content range for AISI 8620 steel? (Day 41, Q22)
D
SAE 46xx is a steel designation for which type of alloy? (Day 41, Q23)
D
What are the parts of a file: tang, heel, and ________? (Day 41, Q24)
D
What tool with hardened steel points is used for scribing circles or laying off distances? (Day 41, Q25)
B
What is the center distance for a pair of gear and pinion with a ratio of 5 and circular pitch of 0.5 inch (gear has 70 teeth)? (Day 41, Q26)
C
What is the safe shaft diameter required to transmit 40 hp at 205 rpm? (Day 41, Q27)
D
What is the diameter in mm of an SAE 1040 power transmitting steel shaft to transmit 150 kw at 900 rpm? (Day 41, Q28)
B
From what height must a pile driver hammer drop to attain a velocity of 12.8 m/s? (Day 41, Q29)
A
What is the kinetic energy of an 800 lb material moving at 15 ft/sec? (Day 41, Q30)
A
How many 1/2 inch diameter set-screws are needed to transmit 10 hp at 1200 rpm on a 1.5 inch shaft? (Day 41, Q31)
B
How far does a truck travel before stopping if it is traveling at 30 m/s and decelerating at 4 m/s²? (Day 41, Q32)
D
What is the circular pitch of a gear set with ratio 5, distance 18, and gear teeth 90? (Day 41, Q33)
A
What is the acceleration of a roller coaster at 20 m/s with a radius of curvature of 6500 cm? (Day 41, Q34)
B
Determine the kinetic energy of 260 kgs of material on a conveyor at 800 ft/min. (Day 41, Q35)
D
Find the center distance for a 90 teeth gear and 18 teeth pinion with 0.545 circular pitch. (Day 41, Q36)
B
A motorcycle slides 90 meters on asphalt (f=0.6). What was its initial speed in m/s? (Day 41, Q37)
D
Find the center distance for a 110 tooth gear with 0.905 circular pitch and ratio 5. (Day 41, Q38)
C
Determine the polar section modulus (Zp) of a 1-inch diameter shaft. (Day 41, Q39)
C
Determine the polar moment of inertia of a 32 mm diameter shaft. (Day 41, Q40)
A
A car accelerates at 3 m/s² on a curve (r=180m). What is the total acceleration when speed is 24 m/s? (Day 41, Q41)
B
Determine the power transmitted in kw by a 2 3/8 inch shaft at 170 rpm. (Day 41, Q42)
A
What is the diametral pitch for a gear/pinion set (45/15 teeth) with 40 cm distance? (Day 41, Q43)
D
A flywheel accelerates from rest at 7 rad/s². How many radians are achieved in 10 seconds? (Day 41, Q44)
D
Compute the polar section modulus of a hollow shaft (OD 2 5/8 in, ID 2 in). (Day 41, Q45)
C
What is the highest altitude attained by a baseball thrown at 45 degrees at 5000 cm/s? (Day 41, Q46)
C
What is the maximum moment in a simply supported 20-foot beam with a 2,000 lb load at midspan? (Day 41, Q47)
D
What is the hoop stress in a 60-inch diameter steel pipe under 550 ft of water pressure head? (Day 41, Q48)
B
What is the length of belt needed for flat pulleys (70 cm and 30 cm dia) at a 400 cm distance? (Day 41, Q49)
A
What is the circular pitch for a gear set with ratio 3 and a 60-tooth gear? (Day 41, Q50)
C
In the SAE identification code of steel shafting, the 3rd and 4th digits represent the content of:
B
A moving truck skids to a stop 20 meters after the brakes are applied while traveling 90 kph. What is the acceleration?
B
The process of increasing the carbon content to the surface of steel by exposing it to hot carbonaceous material above the transformation temperature of 1650 to 1750 deg F.
B
For lineshaft carrying pulley, the general practice is to use an allowable stress of:
B
Steel that has been deoxidized with a strong deoxidizing agent such as silicon or aluminum in order to eliminate oxygen and carbon reaction during solidification.
B
Device that prevents entrance of moisture and other fluids and permits pressure differential between the exterior and the interior:
B
Device used to guard surfaces against marring:
B
When the hole is smaller than the shaft, the allowance is said to be negative and is called:
A
The stress in an elastic material is:
C
A micrometer measured by:
D
An impact test is used to test a metal for:
A
A partial bearing is one in which:
B
For a completely corrosion resistant stainless steel, what minimum percentage of chromium in the alloy is required?
B
The amount by which the width of a tooth space exceeds the thickness of an engaging tooth on the pitch circles of a gear:
B
Steels containing large amounts of mild nickel and chromium are classified as:
C
The product of the mass and the linear velocity of a body is:
D
When a steel is described as SAE 1820:
D
Which of the following is not a heat treatment process?
A
The term used in referring to the continuous increase in the strain, or deformation, of any material subjected to stress:
B
Poisson's ratio is defined as the ratio of:
A
At relatively high temperatures and low rates of strains, structures will perform better if the material is:
C
The most important factor in determining high-temperature behavior of an alloy is:
D
Modulus of rigidity of a steel member is:
C
Arc of the pitch circle through which a tooth travels from the point of contact with the mating tooth to the pitch point of a gear:
D
Which of the following steels contains chromium?
D
The conical surface at the starting end of the thread is called:
C
It is a good design practice for steel lineshafting to consider a limit to the linear deflection of ________ inch/foot length of maximum.
C
Determine the number of 1/2 in diameter setscrews needed to transmit 8 hp at a shaft speed of 1000 rpm on a 3.81 cm diameter SAE 1040 shaft.
B
The soldering material commonly applied to automobile radiator cores and roofing seams is:
B
Axially loaded rectangular groove in a hub and shaft:
A
This indicates how many times a volume of material is heavier than an equal volume of water:
A
The flux that should NOT be provided in soldering electrical connection or commutator wires because it tends to corrode the connections:
D
Bevel gears subjected to corrosion and lightly loaded are usually made of:
D
A major component of cast steel is:
C
The factor of safety in wire rope design for hazard to life and property application like foundry operation should be:
A
Split pulleys have their maximum speed limited to ________ of the speed of solid pulleys:
B
When an external gear is meshed with an internal gear, the gears will rotate in:
A
Taps are resharpened by grinding the:
A
Steel that has been deoxidized with manganese is called:
C
If the weight of 6 inches diameter by 48 inches long SAE 1030 shafting is 195 kg, what will be the weight of a chromium SAE 1416 shaft of the same size?
B
The main alloying element in High Speed Steel is:
B
A type of welding process wherein a mixture of aluminum powder and metal oxide powder is ignited by a special powder in a crucible:
C
In flywheel design, the normal factor of safety is:
B
Hardened steel parts have:
A
A 90 inches long shaft rotates about one end at 12 rad/sec. It accelerates at 12 rad/sec². How long will it take for the velocity of the free end to reach 150 m/sec?
B
Ultimate shear strength is 42,000 lb/in². Find the force to punch two 3-inch diameter holes in a 5/8 inch steel plate.
C
Oil pressure is 200 psi, inside diameter is 30 inches, yield point is 38,000 psi, and safety factor is 4. Determine the wall thickness.
B
Compute the circular pitch of a gear having a 5 inches pitch diameter and 40 teeth.
A
A round steel bar 12 inches long shortens 0.004 inch under a 40,000 lb compression load. With E = 15.5x10⁶ psi, find the rod diameter.
C
Compute the lineshaft diameter to transmit 40 kw at 1200 rpm. Ultimate shear stress is 81.95 MPa and safety factor is 10.
D
In the SAE identification code of steel shafting, what do the 3rd and 4th digits represent?
B
A moving truck skids to a stop 20 meters after the brakes are applied while traveling 90 kph. What is the acceleration in m/s²?
B
What is the process of increasing carbon content to the surface of steel by exposing it to hot carbonaceous material above the transformation temperature?
B
For a lineshaft carrying a pulley, what is the standard allowable stress used in general practice?
B
Which type of steel has been deoxidized with agents like silicon or aluminum to eliminate oxygen reactions during solidification?
B
What device prevents the entrance of moisture and other fluids and permits pressure differential between the exterior and interior?
B
Which device is used specifically to guard surfaces against marring?
B
When the hole is smaller than the shaft, the allowance is negative and is called:
A
In an elastic material, the stress is:
C
A standard micrometer measures by:
D
What property of a metal is an impact test used to determine?
A
How is a partial bearing defined?
B
What is the minimum percentage of chromium required for a completely corrosion-resistant stainless steel?
B
What is the amount by which the width of a tooth space exceeds the thickness of an engaging tooth?
B
Steels containing large amounts of mild nickel and chromium are known as:
C
What is the product of the mass and the linear velocity of a body?
D
When a steel is described as SAE 1820, it contains approximately:
D
Which of the following is NOT a heat treatment process?
A
What term refers to the continuous increase in strain or deformation of a material subjected to stress?
B
Poisson's ratio is the ratio of the:
A
At relatively high temperatures and low rates of strain, structures perform better if the material is:
C
What is the most important factor in determining the high-temperature behavior of an alloy?
D
How is the modulus of rigidity of a steel member defined?
C
What is the arc of the pitch circle through which a tooth travels from contact to the pitch point?
D
Which of the following steel designations specifically contains chromium?
D
What is the conical surface at the starting end of a thread called?
C
What is the recommended maximum linear deflection for steel lineshafting?
C
How many 1/2-inch diameter setscrews are needed to transmit 8 hp at 1000 rpm on a 3.81 cm (1.5 inch) shaft?
B
What is the common tin/lead percentage for soldering radiator cores and roofing seams?
B
What is an axially loaded rectangular groove in a hub and shaft called?
A
What indicates how many times a volume of material is heavier than an equal volume of water?
A
Which flux should be avoided in soldering electrical connections due to its corrosive nature?
D
Lightly loaded bevel gears subjected to corrosion are typically made of which material?
B
What is the major component of cast steel?
C
In hazardous wire rope applications like foundry operations, what is true regarding the factor of safety?
A
What is the maximum speed limit for split pulleys compared to solid pulleys?
B
In which direction do gears rotate when an external gear meshes with an internal gear?
A
How are taps resharpened?
A
Steel that has been deoxidized using manganese is called:
C
If a 6" dia x 48" long SAE 1030 shaft weighs 195 kg, what is the weight of a chromium SAE 1416 shaft of the same size?
B
What is the main alloying element in High Speed Steel (HSS)?
B
Which welding process uses a mixture of aluminum powder and metal oxide ignited in a crucible?
C
What is the normal factor of safety used in flywheel design?
B
What kind of grain structure do hardened steel parts possess?
A
How long (in seconds) will it take for the free end of a 90-inch shaft rotating at 12 rad/sec and accelerating at 12 rad/sec² to reach 150 m/sec?
B
Calculate the force required to punch two 3-inch diameter holes in a 5/8 inch steel plate with an ultimate shear strength of 42,000 lb/in².
C
Determine the wall thickness for an oil cylinder (30" ID, 200 psi pressure) made of steel with a yield point of 38,000 psi and a FS of 4.
B
What is the circular pitch of a gear with a 5-inch pitch diameter and 40 teeth?
A
Determine the diameter of a 12-inch steel bar to withstand 40,000 lb compression without shortening more than 0.004 inches.
C
What is the required lineshaft diameter to transmit 40 kw at 1200 rpm with a safety factor of 10?
