Engineering

Q3: Write whether each of the following is true (T) or false (F): (25 marks) 1- Heat engine uses kinetic energy to produce mechanical work. 2- In a two stroke engine, the working cycle is completed in two revolutions of the crankshaft. 3- The transfer port is present in four-stroke engine. 4- The effect of dissociation is higher than that of change of specific heat. 2/3 5- The value of specific heat ratio y for a real gas decreases with increase in temperature. 6- The brake power is the net power available at the piston of the engine. 7- The Stirling cycle consists of two isothermal and two constant pressure processes.

EXPERT ANSWER Solution with discussion : 1. False statement! Heat engine is a device which uses the chemical energy of fuel to with mechanical work output. Like our bike and car engines. It takes chemical energy of petrol or oils to produce mechanical work. 2. False statement! In two stroke engine cycle is completed in …

Q3: Write whether each of the following is true (T) or false (F): (25 marks) 1- Heat engine uses kinetic energy to produce mechanical work. 2- In a two stroke engine, the working cycle is completed in two revolutions of the crankshaft. 3- The transfer port is present in four-stroke engine. 4- The effect of dissociation is higher than that of change of specific heat. 2/3 5- The value of specific heat ratio y for a real gas decreases with increase in temperature. 6- The brake power is the net power available at the piston of the engine. 7- The Stirling cycle consists of two isothermal and two constant pressure processes. Read More »

The figure shows a rectangular loop of wire of 80 turns, 13.0by 28.0 cm. It carries a curent of 2.04 A and is hinged at oneside. What is the magnitude of the torque that acts on the loop, ifit is mounted with its plane at an angle of 46.0 degrees to thedirection of B, which is uniform and equal to0.50 T?

The figure shows a rectangular loop of wire of 80 turns, 13.0by 28.0 cm. It carries a curent of 2.04 A and is hinged at oneside. What is the magnitude of the torque that acts on the loop, ifit is mounted with its plane at an angle of 46.0 degrees to thedirection of B, which is …

The figure shows a rectangular loop of wire of 80 turns, 13.0by 28.0 cm. It carries a curent of 2.04 A and is hinged at oneside. What is the magnitude of the torque that acts on the loop, ifit is mounted with its plane at an angle of 46.0 degrees to thedirection of B, which is uniform and equal to0.50 T? Read More »

The assembly consists of two 10-mm diameter red brass C83400 copper rods AB and CD, a15-mmdiameter 304 stainless steel rod EF, and a rigid bar G. The modulus of elasticity for red brass C83400 is101 GPa, for 304 stainless steel 193 GPa. (Figure 1) If P = 4.4kN, determine the horizontal displacement of end F of rod EF.

The assembly consists of two 10-mm diameter red brass C83400 copper rods AB and CD, a15-mmdiameter 304 stainless steel rod EF, and a rigid bar G. The modulus of elasticity for red brass C83400 is101 GPa, for 304 stainless steel 193 GPa. (Figure 1)    If P = 4.4kN, determine the horizontal displacement of end F of rod EF. EXPERT ANSWER

The assembly consists of two 10-mm diameter red brass C83400 copper rods AB and CD, a15-mm diameter 304 stainless steel rod EF, and a rig d bar G. The modulus of elasticity for red brass C83400 is 101 GPa, for 304 stainless steel193 GPa. If the horizontal displacement of end F of rod EF is 0.5, determine the magnitude of P.

The assembly consists of two 10-mm diameter red brass C83400 copper rods AB and CD, a15-mm diameter 304 stainless steel rod EF, and a rig d bar G. The modulus of elasticity for red brass C83400 is 101 GPa, for 304 stainless steel193 GPa. If the horizontal displacement of end F of rod EF is 0.5, determine the magnitude of P. EXPERT ANSWER

The assembly consists of two red brass C83400 copper alloy rods AB and CD of diameter 30 mm,a stainless 304 steel alloy rod EF of diameter 40 mm, and a rigid cap G. If the supports at A, C and F are rigid,determine the average normal stress developed in rods AB, CD and EF.

The assembly consists of two red brass C83400 copper alloy rods AB and CD of diameter 30 mm, a stainless 304 steel alloy rod EF of diameter 40 mm, and a rigid cap G. If the supports at A, C and F are rigid, determine the average normal stress developed in rods AB, CD and …

The assembly consists of two red brass C83400 copper alloy rods AB and CD of diameter 30 mm,a stainless 304 steel alloy rod EF of diameter 40 mm, and a rigid cap G. If the supports at A, C and F are rigid,determine the average normal stress developed in rods AB, CD and EF. Read More »

The assembly consists of two 10-mm diameter red brass C83400 copper rods AB and CD, a15-mm diameter 304 stainless steel rod EF, and a rig d bar G. The modulus of elasticity for red brass C83400 is 101 GPa, for 304 stainless steel193 GPa. If the horizontal displacement of end F of rod EF is 0.5, determine the agnitude of P.

The assembly consists of two 10-mm diameter red brass C83400 copper rods AB and CD, a15-mm diameter 304 stainless steel rod EF, and a rig d bar G. The modulus of elasticity for red brass C83400 is 101 GPa, for 304 stainless steel193 GPa. If the horizontal displacement of end F of rod EF is …

The assembly consists of two 10-mm diameter red brass C83400 copper rods AB and CD, a15-mm diameter 304 stainless steel rod EF, and a rig d bar G. The modulus of elasticity for red brass C83400 is 101 GPa, for 304 stainless steel193 GPa. If the horizontal displacement of end F of rod EF is 0.5, determine the agnitude of P. Read More »

A pipeline carries oil (sp. gravity 0.83), at a velocity 2 m/s through a 20 cm pipe. At another section of the pipeline the diameter is reduced to 15 cm. Find the velocity at this section and the mass flow rate of flow in pipe.

A pipeline carries oil (sp. gravity 0.83), at a velocity 2 m/s through a 20 cm pipe. At another section of the pipeline the diameter is reduced to 15 cm. Find the velocity at this section and the mass flow rate of flow in pipe. EXPERT ANSWER