Manifold vacuum can be used to drive accessories on automobiles. The best-known application is the vacuum servo, used to provide power assistance for the brakes. Obsolete applications include vacuum-driven windscreen wipers and Autovac fuel pumps. Some aircraft instruments (Attitude Indicator (AI) and the Heading Indicator (HI)) are typically vacuum-powered, as protection against loss of all (electrically powered) instruments, since early aircraft often did not have electrical systems, and since there are two readily available sources of vacuum on a moving aircraft—the engine and an external venturi. Vacuum induction melting uses electromagnetic induction within a vacuum.
Manifold vacuum can be used to drive accessories on automobiles . The best - known application is the vacuum servo , used to provide power assistance for the brakes . Obsolete applications include vacuum - driven windscreen wipers and Autovac fuel pumps . Some aircraft instruments ( Attitude Indicator ( AI ) and the Heading Indicator ( HI ) ) are typically vacuum - powered , as protection against loss of all ( electrically powered ) instruments , since early aircraft often did not have electrical systems , and since there are two readily available sources of vacuum on a moving aircraft — the engine and an external venturi . Vacuum induction melting uses electromagnetic induction within a vacuum .
What provides power assistance for auto brakes?
What provides power assistance for auto brakes ?
vacuum servo
vacuum servo