Redesign the circuit by choosing a new value for RC that guarantees operation in the active mode for transistors with β ranging between 50 and 150. What range of collector voltages would the circuit exhibit over the range of β’s?

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero