- (A) To reduce the head loss in discharge
- (B) To increase the pump efficiency
- (C) To collect liquid from the periphery of the impeller and to transmit it to the delivery pipe at constant velocity
- (D) To increase the pump discharge rate
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- (A) Below the yield point
- (B) Above the yield point
- (C) Below the elastic limit
- (D) At the elastic limit
- (A) Malleable iron
- (B) Grey cast iron
- (C) Chilled cast iron
- (D) White cast iron
- (A) Surface roughness
- (B) Pores
- (C) Spherical inclusion
- (D) Crack
- (A) Tungsten
- (B) Zirconium
- (C) Molybdenum
- (D) Tantalum
- (A) Tin
- (B) Lead
- (C) Zinc
- (D) Glass
- (A) 6 : 1
- (B) 12 : 1
- (C) 18 : 1
- (D) 24 : 1
- (A) Crystallise faster
- (B) Resist greater tensile stress at room temperature
- (C) Have higher melting temperature
- (D) Are better conductor of electricity at higher temperature
- (A) Cathodic protection
- (B) Anodic protection
- (C) Usage of largest possible anodic area
- (D) Any one of these
- (A) μ , α and θ all have units of m/s
- (B) μ , α and θ all have units of m2/s
- (C) α and θ have units of m2/s, while μ has unit of m/s
- (D) α and θ have units of m/s, while μ has unit of m2/s
