Q.4. two thermocouples (temperature measurement devices) are tested by inserting their probes in boil- ing water, recording the readings, removing and drying the probes, and then doing it again. the results of five measurements are as follows: t(°c)-thermocouple a | 72.4 | 73.1 | 72.6 72.8 | 73.0 t(c) thermocouple b 973 1014 98.701100.4 (a) for each set of temperature readings, calculate the sample mean, the range, and the sample (b) which thermocoupie readings exhibit the higher degree of scatter? which thermocouple is more standard deviation. accurate?

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false