From the descriptions below, indicate the type of state of the system. Explain your answers.

A system consists of a battery in a fixed–volume container. the battery has a very large but finite internal electrical resistance and, as a result, slowly but spontaneously discharges with time. Assume that the battery has only two independent properties: energy E and charge C. Typically, the charge is measured in ampere–hours. From the descriptions below, indicate the type of state of the system. Explain your answers.

(a) the container walls are impermeable to energy. the battery is charged and its electrodes are not connected to any external device. Consider both short and long periods of time.

(b)  Same as in part (a), except that the battery is now fully discharged.

(c) Same as in part (a), except that the electrodes are now connected to a battery charger that maintains the charge at a constant value.

(d) Same as in part (c), except that the battery also interacts with a system that maintains the battery energy at a constant value.

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….