Two meters are connected in a circuit to measure the current in a component and the potential difference across the component. Which meters are used and how are they connected to the component? A) an ammeter in series for current, a voltmeter in parallel for potential difference

B) an ammeter in parallel for current, a voltmeter in series for potential difference

C) a voltmeter in parallel for current, an ammeter in series for potential difference

D) avoltmeter in series for current, an ammeter in parallel for potential difference

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Which of the following are appropriate acceleration units?

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)