High speed steel cutting tools operate at cutting speeds _________ than carbon steel tools.
2 to 3 times lower
2 to 3 times higher
5 to 8 times higher
8 to 20 times higher
- The vector sum of cutting velocity and chip velocity is __________ shear velocity.
- Segmental chips are formed during machining
- A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to…
- The hard grade grinding wheels are denoted by the letters
- The operation of machining several surfaces of a workpiece simultaneously is called
- Which of the following parameters govern the value of shear angle in continuous chip formation?
- Grinding wheels should be tested for balance
- In ultrasonic machining, tool is made of
- Which of the following statement is correct about hot machining?
- What is the name of the device used in arc welding circuits for the purpose of modifying the rate of…
- In electro-discharge machining, dielectric is used to
- A right hand tool on a lathe cuts most efficiently when it travels
- In _________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to…
- Internal or external threads of different pitches can be produced by
- The saw milling is an operation of
- Low helix angle drills are preferred for drilling holes in
- The advantage of a broaching operation is that
- The tool life is affected by
- A drill mainly used in drilling brass, copper or softer materials, is
- The tailstock set over required to turn a taper on the entire length of a workpiece having diameters…
- Slow speed of the spindle is necessary in
- The specific cutting energy used for establishing the machinability of the metal depends upon its
- In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting…
- Which of the following statement is correct as regard to up milling?
- The tap used to cut threads in a blind hole is
- In a planer
- The crystal structure of austenite is
- In drilling Bakelite and fibrous plastics, the point angle of a drill is
- In electrochemical machining, the gap between the tool and work is kept as
- A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.