What is the function of alloying elements (e. g., cr, v, w, and mo) in tool steels? a. the alloying elements in tool steels combine with the carbon to form easily melted carbide compounds. b. the alloying elements in tool steels improve the capacity of these alloys to be heat treated. c. the alloying elements in tool steels improve the corrosion resistance. d. the alloying elements in tool steels give rise to a variety of strength-ductility combinations. e. the alloying elements in tool steels combine with the carbon to form very hard and wear-resistant carbide compounds.

What is the main objective of using reheat rankine cycle?

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?

Figure out the odd statement about ceramics in the following (a) good insulators of heat and electricity (b) usually less desire than metals (c) ductile in nature (d) contains both metallic and nonmetallic elements