In a parallel hybrid vehicle, the single electric motor and the internal combustion engine are installed such that they can power the vehicle either individually or together. In contrast to the power split configuration typically only one electric motor is installed.
Step 1. Preheat your oven to 325 degrees Fahrenheit for a pot roast from the round; 425 degrees for a pot roast from the chuck; and 350 degrees for a pot roast from the rib. The weight and type of roast determines the cooking time; you should cook a roast until its internal temperature is between 135 and 150 degrees F. For instance, a 2- to 3-lb. rump roast cooks for 1 Â½ to 2 hours to medium-rare doneness, the Cattlemen's Beef Board and National Cattlemen's Beef Association website advises.
TIPS FOR ROASTING BEEF. 1  Let the meat come to room temperature before you cook it. 2  Roast the beef at a high temperature (240Â°C/fan220Â°C/gas 9, or as high as your oven will go) for about 15 minutes to get the heat through to the centre of the joint. 3  Rest the meat before carving. Roast the beef at a high temperature (240Â°C/fan220Â°C/gas 9, or as high as your oven will go) for about 15 minutes to get the heat through to the centre of the joint.