Siemens Level 1 Exam Questions With 100% Correct Answers

Siemens Level 1 Exam Questions With 100% Correct Answers How can the piston speed of cylinder 1A be greater during retraction than it is in extension for the control system shown below? - answer**NOT By installation of a quick exhaust valve between valve 1V1 and 1V2** Which statement about the operation of the control circuit shown below is correct? - answerAfter pushing S1 cylinder 1A retracts immediately. The text below represents the logical association between transition conditions. Which of the transition conditions represented by Boolean expressions, logic symbols and standardized circuit symbols are correct? - answerSolution B, Solution E Which of the following displacement step diagrams show the operations of the cylinder 1A and the valve 1V1 correctly in the pneumatic circuit diagram below? - answerDiagram A For the pneumatic circuit diagram shown below, which task does valve 1V2 do? - answerIt serves to set the forward speed of cylinder 1A. Which of the following output voltages based on the float position of an automotive fuel level sensor, as shown below, is correct? - answer10V 5V 0V An electrical power supply is shown below. Which statements about the functionality ofthe circuit are correct? - answer**NOT The diode rectifier changes the AC voltage to a pulsating full-wave DC voltagethat is smoothed by the capacitor C1. AND If the fuse is blown, the AC voltage between point 2 and 3 will be 230 V.** In a testing application inspection cylinder 2A has to distinguish between lower and upper half cubes, as shown below. Which statements about the mode of operation are correct? - answer**NOT In Figure a, the part is recognized as a lower half cube. Inspection cylinder 2A has reached the extended end position, which is detected by sensor 2B1. AND In Figure b, the part is recognized as an upper half cube. Inspection cylinder 2A has reached the extended end position, which is detected by sensor 2B1.** The result from a "Teach in procedure" of an ultrasonic sensor with analog output is shown below. Which statements about the operation of the sensor are correct? - answerThe output voltage when an object is detected at a distance of 55 mm is ˜ 5 V., The voltage at the output alters by 10 V / 50 mm = 0.2 V / mm, starting from the zero point. The switching frequency of a power electronic for a DC machine is set to 2 kHz. This could cause: - answerAnnoying noise. Picture A shows an electrical circuit with a motor. Part #3 compares current I1 and I2. If the current I1 is not I2 equal part #3 breaks the circuit. Which safety function does circuit element #3 accomplish? - answerProtects the operator from current flow through the machine housing The internals of an automotive gearbox are shown below. What condition must hold true if any two gears of the type shown are to mesh properly? - answerThe teeth of both gears must be the same size., The shafts must be parallel The builder of the automotive racing engine shown in the picture decided to use socket head cap screws to attach the valve covers. What is the pitch of the screws used? - answer2mm Which components are used for energy transport between different machine units of a system? - answerTiming Belts, Power Screws The Boolean equation for the logic represented in the ladder diagram shown below can be expressed as ... - answerY = (A) + (C ) + (BC) The move instruction copies data from ... - answer... a source byte to a destination byte. The symbol shown below in the ladder diagram ... (looks like --| |--) - answer... can be thought of as a contact that is usually opened. The maximum number of networks allowed in a Step 7 program is ... - answer... limited only by the memory size. Which of the following counter is available in STEP 7? - answerUp/Down counter What is the use of the cushioning of a double-acting cylinder? - answerIt prevents a hard striking of the piston at the end positions. Which statement about a single-acting cylinder is correct? - answerThe retraction of the piston is usually achieved by a spring. Given for the system shown below: A1 = 50 cm2, A2 = 800 cm2, s1 = 16 cm. Determine s2. - answers2=1cm The electrical circuit diagram and the pneumatic circuit diagram of a control system are shown below. Which statements about the mode of action are correct? - answerAs long as no pushbutton is pressed, the directional control valve remains in the retracted end position. AND The piston rod of the cylinder is to be advanced if either of the two pushbuttons S1 or S2 is pressed.