Which of the following is "invalid" assignment? name(x) <- c("New York", "Seattle", "Los Angeles") names (x) <- c("New York", "Seattle", "Los Angeles") x <- list("Los Angeles" = 1, Boston =2, London =3)

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

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines