If a motor driven by PWM using half-bridge operation has a speed of 1,426 rpm at a duty cycle of 100% (full forward), what will its speed be at a duty cycle of 47%

At the mid-plane of a plate in pure bending the stresses are minimum. a) True b) - False

In a nuclear reactor, more fuel is burned than is consumed. a) - True b) - False

Name the main classes of polymer and define their characteristic properties

3. Material Safety Data Sheets contain information on PEL. What is PEL? A. Permissible Exposure Limit to a chemical OB. Potential Explosive Level of a chemical C. Protective Equipment Laws applied to a chemical OD. None of these

4. Which of the following are used for vehicle and/or major component identification? A. Calibration decals B. Vehicle certification labels C. VIN (vehicle identification number) D. All of the above Grade/Exit

7 Single-use earplugs require a professional fitting before they can be used. A True B) False

Electric power is to be generated by installing a hydraulic turbine-generator at a site 138 m below the free surface of a large water reservoir that can supply water at a rate of 2400 kg/s steadily. Determine the power generation potential.

When the French horn plays with brass instruments, then it is played very softly to match the texture. True/False

You're running an engine and seeing that it is exhausting blue smoke. Which is likely to be the problem?

To do a research, a researcher needs to be clear about what he/she is doing, why he/she is doing it and the associated implications of what he/she is about to do. A. True B. False