Machine Design If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to (T₁ + T₂ + Tc)/2 T₁ - T₂ + Tc (T₁ - T₂ + Tc)/2 T₁ + T₂ + Tc (T₁ + T₂ + Tc)/2 T₁ - T₂ + Tc (T₁ - T₂ + Tc)/2 T₁ + T₂ + Tc ANSWER DOWNLOAD EXAMIANS APP
Machine Design The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called Fluctuating stress Alternating stress Yield stress Repeated stress Fluctuating stress Alternating stress Yield stress Repeated stress ANSWER DOWNLOAD EXAMIANS APP
Machine Design When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring) (2WD/ πd3) × K (8WD/ πd3) × K (WD/ πd3) × K (4WD/ πd3) × K (2WD/ πd3) × K (8WD/ πd3) × K (WD/ πd3) × K (4WD/ πd3) × K ANSWER DOWNLOAD EXAMIANS APP
Machine Design The dedendum circle diameter is equal to (where φ = Pressure angle) Clearance circle diameter × cosφ Pitch circle diameter × sinφ Addendum circle diameter × cosφ Pitch circle diameter × cosφ Clearance circle diameter × cosφ Pitch circle diameter × sinφ Addendum circle diameter × cosφ Pitch circle diameter × cosφ ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate) πd.t.τu π/4 × d².τu π/4 × d² × tτu t.τu πd.t.τu π/4 × d².τu π/4 × d² × tτu t.τu ANSWER DOWNLOAD EXAMIANS APP
Machine Design A compound cylinder with inner radius 50 mm and outer radius 70 mm is made by shrinking one cylinder on to the other cylinder, the junction radius is 60 mm and the junction pressure is 1.1 N/mm². The maximum hoop stress developed in the inner cylinder is 7.2 N/mm² compression 7.2 N/mm² tension 3.6 N/mm² compression 3.6 N/mm² tension 7.2 N/mm² compression 7.2 N/mm² tension 3.6 N/mm² compression 3.6 N/mm² tension ANSWER DOWNLOAD EXAMIANS APP
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