SSC JE Mechanical Engineering 2015

$$\frac{9KG}{G + 3K}$$

$$\frac{9KG}{3G + K}$$

$$\frac{3K + G}{3G + K}$$

$$\frac{6KG}{K + 3G}$$

sum of the strain produced by the individual bars

same as the strain produced in each bar

difference of strain produced by the individual bars

same as the stress produced in each bars

$$k = \frac{k_1k_2}{k_1 + k_2}$$

$$k = \frac{k_1 + k_2}{k_1k_2}$$

$$k = k_1 + k_2$$

$$k = k_1k_2$$

10 Nm

100 Nm

600 Nm

60 Nm

$$\sum F_x = 0$$ and $$\sum F_y = 0$$

$$\sum F_x = 0, \sum F_y = 0$$ and $$\sum M_{z - axis} = 0$$

$$\sum F_x = 0, \sum F_y = 0$$ and $$\sum F_z = 0$$

$$\sum F_x = 0, \sum F_y = 0, \sum F_z = 0, \sum M_x = 0, \sum M_y = 0$$, and $$\sum M_z = 0$$

the net work transfer is higher than the net heat transfer

the network transfer is lower than the net heat transfer

the network transfer is equal to the net heat transfer

the network transfer is equal to or higher than the net heat transfer

sum of internal energy and the product of pressure and volume of the system

sum of internal energy and the product of pressure and density of the system

difference between the internal energy and the product of pressure and density of the system

difference between the internal energy and the product of pressure and volume of the system

heat transfer

mass transfer

work transfer

entropy transfer

to convert the heat supplied into complete work energy under reversible conditions

to convert the heat supplied into complete work energy under all conditions

to produce useful work from the heat received from a source and also rejects the remaining heat to the sink under all conditions

to produce useful work from the heat received from a source and also rejects the remaining heat to the sink under reversible conditions

decreases the required work and refrigeration effect

increase the required work and refrigeration effect

increases the required work and decrease the refrigeration effect

does not affect the required work and increases the refrigeration effect