9. Technicians A and B are discussing hybrid engines. Technician A says that idle stop in HEVs and EREVs is a safety feature for technicians. Technician B says that high viscosity engine oil should be used with most hybrid electric vehicles. Who is correct?
A. Technician B
B. Both Technicians A and B
C. Neither Technician A nor B
D. Technician A
What is the right answer

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.