The by pass control circuit is otherwise called as
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- A major disadvantage of on/off control is that it cannot work for applications requiring very small changes from the set point (sp) a. true b. falseIntroduction about Pnuematic Control of Double Acting Cylinder Using Counter and TimerSelect the proper choice(s) for each of the following statements: 1) To control single-acting cylinder we just need: double-acting cylinder we should use A2/2-way, 5/2-way, (C) 3/3-way, 3/4-way, 2) In DCV. (B) 3/2-way, 4/2-way, (D) 4/3-way, 3/2-way. mid poistion of DCV, we can move cylinder piston rod freely without resistance by hand. (A) working ports are exhausted, (C) working ports are pressurized, 3) In pneumatics we use A Compressor (B) Pump, DCV, while to control the 4) Quick exhaust valve is used to (A) increase the cylinder return speed. (C) meter-out the cylinder speed (B) all ports are closed. no one of these options. to obtain high pressure air. (C) Turbine, (D) pressure relief valve. (B) meter-in the cylinder speed, (D) increase the cylinder extending speed. 6) Meter-in of cylinder movement is used to control the Afluid that enters the hydraulic cylinder, (B) fluid that exits the hydraulic cylinder, (C) fluid that enters the DCV (D) fluid that exits the DCV. 5) One of the…
- The linear variable differential transformer transducer is a. Resistive transducer b. Capacitive transducer c. Non-inductive transducer d. Inductive transducerA) Using electro-pneumatic control method Draw the circuit of operation (the pneumatic circuit and electrical control circuit ) to run one pneumatic double acting piston cylinder actuator continuously , showing clearly each component in the circuit ?- Industrial Motor Controls, 12.a. What is the purpose of thermostat number 2, IN7, in the mixing vat machine?A. This thermostat is used to monitor the temperature of the incoming fluids.B. This thermostat is used to prevent an over-temperature condition in the event thermostat one sticks open.C. This thermostat is used to turn off the mixing motor after the mixture reaches temperature.D. This thermostat is used to shut off the heater when the chemical mix reaches setpoint.12.b. Why are motor current readings from a frequency inverter not exact readings of motor current?A. Because the output of a frequency inverter is not a sinewaveB. Because a frequency inverter adds a DC voltage level to the AC waveformC. Because a frequency inverter uses a lower voltage sinewaveD. Because the inverter pulses the motor with various sinewave frequencies
- Briefly explain what is meant by a surge-type receiver.Which of the following is not a characteristic ofparallel circuits?a. Total circuit resistance is always less thanthe resistance of the leg with the lowest totalresistance.b. The current through each leg will be differentif the resistance values are different.c. The sum of the resistance in each leg equalsthe total circuit resistance.d. Source voltage will be dropped across eachleg of the parallel circuit.Examine the circuit shown below and answer the following questions: 1. How is the cylinder 3A (towards the right) fundamentally different than cylinders 1A and 2A? 2. Describe 5 key features (ways, actuator, etc.) of the directional control valve 1V1. 3. Describe 5 key features of directional control valve 3V. 4. What type of device is 1V2? 5. Here's a close up of 1V2. Is it metering-in or metering-out? How do you know? 6. Empty triangle shapes appear in many places in this schematic. What do they represent? 1A 181 182 2A 282 3A 281 381 WWE 1V2 1V3 2V2 2V3 1V1 2V1 2Y1H svos H2Y2 3Y1 V 1V3 OV] OY1 211AM OZ