A) The feedback circuit increases the energy consumption of the system. B) The feedback circuit decreases the air gap in the suspension system. C) The feedback circuit eliminates the need for permanent magnets. D) The feedback circuit controls the electromagnet to maintain the suspended object at the correct position.
A) Because it increases energy consumption significantly. B) Due to small time delays in the inductance of the coil and sensing the position. C) Because it eliminates the need for feedback circuitry. D) Because it requires a guiding rail for operation.
A) It reduces energy consumption and increases air gap. B) It requires more permanent magnets than classical EMS. C) It eliminates the need for feedback circuitry. D) It decreases the stability of the system.
A) The principle of gravitational suspension. B) The principle of electrodynamic suspension. C) The principle of mechanical suspension. D) The principle of electromagnetic suspension.
A) Thermal sensors. B) Optical position sensors. C) Inductive gap sensors. D) Mechanical displacement sensors.
A) Through mechanical switching. B) By varying the coil's inductance. C) In a pulse-width modulation (PWM) configuration. D) Using direct current supply.
A) Maglev has higher energy consumption. B) Maglev is quieter and smoother due to reduced physical contact between wheels and track. C) Maglev requires less maintenance than wheeled systems. D) Maglev can operate without any guiding rail.
A) It increases the speed of spaceship launches significantly. B) It reduces the air gap in the launch system. C) It eliminates the need for electromagnetic suspension. D) It saves on design and launching costs while providing a safer launching method.
A) The first commercial maglev train was the Birmingham Maglev, opened in Birmingham, England. B) The Shanghai Maglev Train, opened in Shanghai, China. C) The Transrapid, opened in Germany. D) The M-Bahn, opened in Berlin, Germany.
A) To eliminate the need for gap sensors. B) To supply power to the electromagnets directly. C) To mediate the constant tug-of-war by offsetting bias current as the rotor deviates from its center position. D) To increase the air gap in the system.
A) Mechanical suspension technology. B) Gravitational suspension technology. C) Thermal suspension technology. D) Electrodynamic suspension technology.
A) To decrease the stability of the system. B) To require more permanent magnets. C) To increase air gap and reduce energy consumption. D) To eliminate the need for feedback circuitry.
A) Thermal insulation systems. B) Mechanical shock absorbers. C) Active magnetic bearings in rotating machinery. D) Guiding rails for wheeled transportation.
A) To sense the position of the rotor. B) To eliminate the need for a guiding rail. C) To control the feedback circuitry directly. D) To supply current to the electromagnets.
A) Because they increase noise and vibrations. B) Because they eliminate the need for electromagnetic suspension. C) Because they have higher energy consumption. D) Because they require a guiding rail.
A) To eliminate the need for a controller. B) To provide feedback required to control the position of the rotor within the gap. C) To supply power to the electromagnets. D) To increase the air gap in the system.
A) They can operate without any guiding rail. B) They are quieter and smoother due to reduced physical contact between wheels and track. C) They require less maintenance than traditional rail systems. D) They have higher energy consumption.
A) They rely on mechanical switching. B) They operate using direct current supply. C) They vary the coil's inductance. D) They use solid state devices operating in a pulse-width modulation (PWM) configuration.
A) The need for a guiding rail. B) Small time delays in the inductance of the coil and sensing the position. C) Increased energy consumption. D) Elimination of feedback circuitry.
A) They increase the speed of spaceship launches significantly. B) They save on design and launching costs while providing a safer launching method. C) They eliminate the need for electromagnetic suspension. D) They reduce the air gap in the launch system.
A) Increases energy consumption. B) Used by maglev and hyperloop experts to improve performance. C) Decreases air gap. D) Eliminates the need for permanent magnets.
A) To eliminate the need for permanent magnets. B) To control the electromagnet and maintain the suspended object at the correct position. C) To increase energy consumption. D) To decrease air gap.
A) Hermann Kemper B) Emile Bachelet C) Braunbek D) Samuel Earnshaw
A) Bachelet's Theorem B) Braunbek's Extension C) Kemper's Principle D) Earnshaw's Theorem
A) Braunbek B) Samuel Earnshaw C) Emile Bachelet D) Hermann Kemper
A) Smaller mail carrying systems. B) Large scale monorail vehicles. C) Commercial maglev trains. D) Passenger transportation.
A) Braunbek B) Emile Bachelet C) Hermann Kemper D) Samuel Earnshaw
A) 1984 B) 1934 C) 1912 D) 1979 |