What type of engines are used in the EJet series?

The EJet series, which is a family of regional jets developed by Embraer, utilizes engines that are specifically tailored for regional operations, balancing performance with efficiency. The correct answer identifies the engines used in the EJet series as the GE CF34-8E and Pratt and Whitney PW535E.

These engines are known for their reliability and fuel efficiency, which are critical factors for regional aircraft operating on shorter routes. The GE CF34-8E, in particular, is well-regarded for its thrust capabilities and support for various operational conditions. The combination of these two engine types gives the EJet series the performance necessary to meet the demands of regional airlines while providing passengers with a comfortable flying experience.

The other options reference engines that are either associated with larger aircraft or do not align with the specifications and design of the EJet series. For instance, Rolls-Royce Trent 900 and General Electric GEnx are engines more typically used in wide-body aircraft, while CFM56 and PW4000 are also used in larger commercial jets. The Honeywell HTF7000 and Pratt and Whitney JT15D engines do not apply to the EJet series, as these are more specialized for different categories of aircraft.