Design a band-pass filter with the following specs:

(a) Its first stage is a high-pass filter with a cutoff of 1.5 kHz. The input impedance of the first stage should be at least 500 Ω.

(b) The second stage is a low-pass filter with a cutoff frequency of 10 kHz, and should not load the first stage.

(c) Use a transformer to impedance match the filter to a 20 Ω load (i. e., find the ratio of primary to secondary windings that will do this).

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.

Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.