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A single slider-crank chain yields four distinct inversions depending on which link is fixed as the frame. Which statement accurately identifies the application of one such inversion?

Identify the lathe type characterized by high RPM range (1200-3600), no power feed mechanism, and primary use in polishing/metal spinning operations:

A lathe suited for producing gauges, dies, and jigs while demanding superior dimensional precision should ideally be:

Which machining operation best achieves \( Ra = 0.4 \mu m \) surface finish per standard roughness range?

For tempering cutting tools like shear blades and milling cutters under heavy loads and wear, which oxide color-temperature pair offers the best balance of hardness and toughness?

While turning a taper using a taper turning attachment set to 4°, the cutting tool is positioned 3mm below the centre. With a small end diameter of 40mm and a taper length of 100mm, what actual taper angle results?

In orthogonal cutting on steel with a 10° rake tool: depth of cut = 2mm , feed = 0.20 mm/rev, cutting speed = 200m/min , chip thickness ratio r = 0.31 , vertical cutting force Fv = 1200N, horizontal cutting force F_h = 650N. Using Merchant's theory, calculate the shear stress on the shear plane.

In an orthogonal cutting test using a tool of 10° rake angle: chip thickness ratio r = 0.3, horizontal cutting force F_H = 1290 N, vertical cutting force F_V = 1650 N. Using Merchant's theory, determine the coefficient of friction at

the chip-tool interface.

A 40 mm diameter, 50 mm deep hole is drilled in a mild steel plate. Cutting speed = 65 m/min, feed = 0.25 mm/rev. Determine the approximate machining time and material removal rate (MRR).

A 6m × 1.25m grey cast iron plate is machined on a double housing planer using carbide tools. Cutting speed = 80m/min, return speed = 160m/min. Two roughing cuts at 1.5mm/strokefeed, two finishing cuts at 0.5mm/stroke. Table reversal time = 0.02min/stroke. The total machining time is closest to: