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A non-flow system receives 80 kJ of heat transfer and loses 20 kJ as work transfer. What is the change in the internal energy of the fluid?
The shaft of a steam turbine produces 600 Nm torque at 50 rev/s. Calculate the work transfer rate from the steam.
Find the equivalent spring constant of the system shown in figure below
Three springs with the same constant connected in series and parallel, and a 1-kg object attached at one end of a spring, as shown in figure below. Spring constant is k1 = k2 = k3 = 250 N/m. What is the change in length of the three springs? Acceleration due to gravity is g = 9.806 m.s-2
A steady flow system loses 3 kW of heat also loses 20 kW of work. The fluid flows through the system at a steady rate of 70 kg/s. The velocity at inlet is 20 m/s and at outlet it is 10 m/s. The inlet is 20 m above the outlet. Calculate the following.
i. The change in K.E./s (-10.5 kW)
1. An electric kettle with a 2kW heating element has a heat capacity of 400JK1. lkg of water at 20°C is placed in the kettle. The kettle is switched on and it has been found that 13 minutes later, the mass of the water in it is 0.5kg. Ignoring the heat losses calculate the value of the specific latent heat of vaporisation of the water, Specific heat capacity of water:4200J
An electric kettle with a 2kW heating element has a heat capacity of 400JK1. lkg of water at 20°C is placed in the kettle. The kettle is switched on and it has been found that 13 minutes later, the mass of the water in it is 0.5kg. Ignoring the heat losses calculate the value of the specific latent heat of vaporisation of the water, Specific heat capacity of water:4200J
Two forces P and Q act at an angle of 120° with each other. If the resultant is at right angles to Pand P is equal to 4kg -wt, then the value of Q is
A
4 kgwt
B
8 kgwt
C
6 kgwt
D
3 kgwt
The resultant of two forces 3P and 2P is R if the first force is doubled then the resultant is also doubled. the angle between the two forces is
A
60∘
B
120∘
C
70∘
D
180∘
Given a simply supported beam with 2 point loads of 8KN and 4 KN and a uniform distributed load of 2 KN/m acting on it. Determine the support reactions for the above simply supported beam.
