## Determine (a) the required water flow rate for this section (lbm /hr) and (b) the minimum size of motor needed to drive the pump (hp).

Water is pumped through pipes embedded in the concrete of a large dam. Water enters the pipes at 100 psia and exits at 20 psia. In picking up the heat of hydration of the curing concrete, the water increases in temperature from 50 to 100 F. During curing, the heat of hydration for a section of the dam is 140,000 Btu/hr.

Assume that the pump makes up the pressure lost through the pipes. Ignore changes in kinetic and potential energy.

### Calculate the maximum achievable bridge out-of-balance voltage for an applied torque T of 103 N m given the following

Four strain gauges, with specification given below, are available to measure the torque on a cylindrical shaft 4 cm in diameter connecting a motor and load. (a) Draw clearly labelled….

### Find the gain and phase characteristics of the maintaining amplifier.

A solid-state capacitive humidity sensor has a capacitance given by: C = 1.7 RH + 365pF where RH is the percentage relative humidity. The sensor has an associated parallel resistance….

### calculate the mean velocity of the gas at maximum flow rate

A pitot tube is used to measure the mean velocity of high pressure gas in a 0.15 m diameter pipe. At maximum flow rate the mean pitot differential pressure is….