Which type of tool is used when you need to increase the amount of torque that can be applied by hand to turn
objects such as nuts, bolts, or valves?

a) torque angle gauge
B) c clamp
C slide hammer
D torque multiplier

Cold water (cp=4180j/kg k) leadıng to a shower enters a thin-walled double-pipe heat transfer at 15c at a rate of 0.25kg/s and is heated to 45c by hot water (cp=4190j/kg k) that enters at 100c at the rate of 3kg/s. if the overall heat transfer coefficient is 950w /m2 k , determıne the rate of heat transfer and the heat transfer surface area of the heat exchanger using e - ntu method