Given the electric field E = 1 z2 (8xyzax + 4x 2zay − 4x 2yaz) V/m, find the differential amount of work done in moving a 6-nC charge a distance of 2 µm, starting at P(2, −2, 3) and proceeding in the direction aL = (a) − 6 7ax + 37 a y + 2 7az; (b) 6 7ax − 3 7ay − 2 7az; (c) 3 7ax + 6 7ay.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

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.

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer