1. The purpose of jigs and fixtures are to
a. Increased production rate
b. Increased machining accuracy
c. Facilitate interchangeable manufacturing
d. Enable employ less skilled operators
e. All of the above
Answer:
All of the above
2. Which one of the following methods produces gear by generating process
a. Hobbing
b. Casting
c. Punching
d. Milling
e. Broaching
Answer:
Hobbing
3. Tool life of the cutting tool is most affected by
a. Cutting speed
b. Tool geometry
c. Cutting feed and depth
d. Microstructure of material being cut
e. Not using coolant and lubricant
Answer:
Cutting speed
4. Metal in machining operation is removed by
a. Tearing chips
b. Distortion of metal
c. Shearing the metal across a zone
d. Cutting the metal across a zone
e. Pushing the metal with tool
Answer:
Shearing the metal across a zone
5. A feeler gauge is used to check
a. Radius
b. Screw pitch
c. Surface roughness
d. Unsymmetrical shape
e. Thickness of clearance
Answer:
Thickness of clearance
1. Which is false statement about case hardening? Case hardening is done by
a. Electroplating
b. Cyaniding
c. Induction hardening
d. Nitriding
e. Flame hardening
Answer:
Electroplating
2. Gun metal contains
a. 70% copper and 30% zinc
b. 90% copper and 10% tin
c. 85-92% copper and rest tin with little lead and nickel
d. 70-78% copper and rest tin
e. 85-92% copper and rest zinc
Answer:
85-92% copper and rest tin with little lead and nickel
3. Which of the following is not a casting defect
a. Hot tear
b. Blow hole
c. Scab
d. Decarburization
e. Shift
Answer:
Decarburization
4. Draft on pattern for casting is
a. Shrinkage allowance
b. Identification number marked on it
c. Taper to facilitate its removal from mould
d. Increase in size of cavity due to shaking of pattern
e. For machining allowance
Answer:
Taper to facilitate its removal from mould
5. The increase in hardness due to cold working is called
a. Cold hardening
b. Hot hardening
c. Work hardening
d. Age hardening
e. Induction hardening
Answer:
Work hardening
a. Increased production rate
b. Increased machining accuracy
c. Facilitate interchangeable manufacturing
d. Enable employ less skilled operators
e. All of the above
Answer:
All of the above
2. Which one of the following methods produces gear by generating process
a. Hobbing
b. Casting
c. Punching
d. Milling
e. Broaching
Answer:
Hobbing
3. Tool life of the cutting tool is most affected by
a. Cutting speed
b. Tool geometry
c. Cutting feed and depth
d. Microstructure of material being cut
e. Not using coolant and lubricant
Answer:
Cutting speed
4. Metal in machining operation is removed by
a. Tearing chips
b. Distortion of metal
c. Shearing the metal across a zone
d. Cutting the metal across a zone
e. Pushing the metal with tool
Answer:
Shearing the metal across a zone
5. A feeler gauge is used to check
a. Radius
b. Screw pitch
c. Surface roughness
d. Unsymmetrical shape
e. Thickness of clearance
Answer:
Thickness of clearance
1. Which is false statement about case hardening? Case hardening is done by
a. Electroplating
b. Cyaniding
c. Induction hardening
d. Nitriding
e. Flame hardening
Answer:
Electroplating
2. Gun metal contains
a. 70% copper and 30% zinc
b. 90% copper and 10% tin
c. 85-92% copper and rest tin with little lead and nickel
d. 70-78% copper and rest tin
e. 85-92% copper and rest zinc
Answer:
85-92% copper and rest tin with little lead and nickel
3. Which of the following is not a casting defect
a. Hot tear
b. Blow hole
c. Scab
d. Decarburization
e. Shift
Answer:
Decarburization
4. Draft on pattern for casting is
a. Shrinkage allowance
b. Identification number marked on it
c. Taper to facilitate its removal from mould
d. Increase in size of cavity due to shaking of pattern
e. For machining allowance
Answer:
Taper to facilitate its removal from mould
5. The increase in hardness due to cold working is called
a. Cold hardening
b. Hot hardening
c. Work hardening
d. Age hardening
e. Induction hardening
Answer:
Work hardening
No comments:
Post a Comment