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Angle between the rake face and plane perpendicular to rake face is known as:
In a single point turning tool, the side rake angle and orthogonal rake angle are equal. ϕ is the principal cutting edge angle and its range is 000. The chip flows in the orthogonal plane. The value of ϕ is closest to
Consider the following statements: 1. HSS tools wear very rapidly, whereas in cemented carbide tools, even though hardness is retained, crater wear can occur due to solid-state diffusion. 2. Cutting tools made of Super-HSS, also known as cobalt-based HSS, are made by adding 2% to 15% of cobalt which increases the cutting efficiency at heavier cuts by increasing the hot hardness and wear resistance. 3. Tools failure due to excessive stress can be minimized by providing small or negative rake angles on brittle tool materials, protecting tool tip by providing large side-cutting edge angles, and honing a narrow chamfer along the cutting edge. Which of the above statements are correct?
Consider the following statements with reference to grinding wheel characteristics: 1. Aluminium oxide and silicon carbide are used for making the grinding wheels. 2. Rubber bonds are used for making flexible wheels 3. The grade of a wheel is determined by the strength of the bonding materials 4. Negative rake angles are used for grinding of high-strength materials Which of the above statements are correct?
For large negative back rake angle, tool will be
Negative back rake angle is given for machining of:
“High compressive strength with negative rake” – this is applicable to_____
To produce an old photograph, a photographer charges x dollars to make a negative, 3x/5 dollars for each of the first 10 prints, and x/5 dollars for each print in excess of 10 prints. If 45 dollars is the total charge to make a negative and 20 prints from an old photograph, how many dollars the photographer charges to make a negative?
To produce an old photograph, a photographer charges x dollars to make a negative 3x/5 dollars for each of the first 10 prints, and x/5 dollars for each print in excess of 10 prints. If 45 dollars is the total charge to make a negative and 20 prints from an old photograph, how many dollars the photographer charges to make a negative?
Study the statements listed below (1) Negative skin friction is developed when the pile is driven through a recently deposited clay layer (2) Negative skin friction is developed when the pile is driven through a layer of dense sand (3) Negative skin friction is developed due to sudden drawdown of the water table Out of these statements