4600 Sample Mid

(c) Draw a circuit diagram to represent a TN-C-S earthing system and briefly explain its advantages and disadvantages.   (d) Briefly explain how to estimate the height of air termination of a lightning protection system network using the rolling sphere method and protection angle method. (e) Briefly explain what is meant by Ground Potential Rise (GPR) and explain why an animal like cow would not be adequately protected against GPR.   Note : answer all or else dnt attempt the question

Q14) An assembly line has 3 fail safe sensors and one emergency shutdown switch. The line should keep moving unless any of the following conditions arise: (i) If the emergency switch is pressed (ii) If the senorl and sensor2 are activated at the same time. (iii) If sensor 2 and sensor3 are activated at the same time. (iv) If all the sensors are activated at the same time Suppose a combinational circuit for above case is to be implemented only with NAND Gates. How many minimum number of 2 input NAND gates are required?

In a signal phase, pedestrians are allowed to cross the street walking in the same direction as movements 2 and o. The distance from one side of the street to the next (length of the crosswalk) is 72 ft. The width of the crosswalk is 9 ft. What minimum green time should be set aside for 12 pedestrians (both directions combined) to cross per phase? Round your answer to the next second. Suggest a walk interval, pedestrian clearance interval, and buffer interval.

1) Power for the field devices typically comes from ________.A) The PLC power supply B) Isolated factory floor voltage sourcesC) The PLC I/O module D) None of the above1)2) The output of a TON timer is true whenA) its input (IN) is true and the elapsed time (ET) is less than the preset time (PT)B) its input (IN) is false and the elapsed time (ET) exceeds the preset time (PT)C) its input (IN) is false and the elapsed time (ET) is less than the preset time (PT)D) its input (IN) is true and the elapsed time (ET) exceeds the preset time (PT)2)3) Convert 8B3F16 to binary.A) 1011001111100011 B) 011010C) 35647 D) 10001011001111113)4) The memory size of a double word (DWord or MD) is ________.A) Eight bits B) Four bytes C) Sixteen bits D) Eight bytes4)5) PLCs are ________ designed for use in the control of a wide variety of manufacturing machines andsystems.A) personal computers B) electromechanical systemsC) special-purpose industrial computers D) All of the above5)6) Convert…

7. Describe the direct connection, series and parallel methods of measurements using Q-meters? Why and how do we use these methods, explain in brief.

I have a wooden toy train that runs on wooden tracks. I would like to place two ESP-WROOM-32 Boards on top of the train. Broadcast communication (which involves radio frequency, not Wi-Fi) would help communicate about the train's lateness to five other wooden trains on the same track. Local communication would help communicate to the train station about the train's lateness. I would also need radio frequency Tx-Rx Modules for discharging and undergoing the signal, and repeaters just in case the signal loses power due to long-distance traveling. My wooden train should be automated. It should run at 4 inches per second, keep a minimum distance of 30 seconds away from the other wooden trains, and make a 17-second-long stop every 500 seconds. What's the procedure to connect the components? What's the Arduino code (C++) for this project?

Problem_#03] For the ripple counter below, complete the timing diagram for eight clock pulses. HIGH Jo CLK C Ko K1 Problem_#04] Construct a timing diagram showing sixteen clock pulses. HIGH 000 Jo J2 CLK C C C Ko K1 K2

7.a. Photoelectric eye alignment is typically a PM task for a(n)A. electrician.B. lubricator.C. machine operator.D. mechanic.7.b. Mean time before failure describesA. how long it will take between failures at your plant.B. how long before one component in a group will fail.C. how a failure will occur on a component that’s inside a machine.D. the amount of time a component will last when it’s heavily loaded.7.c. Under an ISO 9000 program, which one of the following employees is responsible for checkingcompleted work to make sure it has been performed to company specifications?A. The maintenance general managerB. The PM program administratorC. A shop foremanD. A maintenance technician

17- The electromechanical breakdown depend on the type of the dielectric between two electrodes a- Right. b- Wrong 18- Basic Insulation Level (BIL) is related to the design consideration of the electric device, while Basic protection (BPL) level is related to protection level of the that device. a Right. Wrong. b- 19- As the voltage regulation increased, receiving end voltage will be reduced. Right. b- Wrong 20- We can be using Solar power generation field as a power factor and voltage profile enhancement in Distribution system. (aRight. b- Wrong. 21- From the general electrostatic theories, the field strength at breakdown is given by: a Eb = V/ do =0.6 [Y/ (€ o Er) ] 0.5. b- Eb V/ do = 0.6 [Y / (€ 0/Er )] 0.5. C- Eb V/ do = 0.6 [ Y/(Eo Er) 20.05. d- Eb V/ do = 0.6 [ Y/ (Eo Er) 10.5. 22- Consider plane electrodes with a solid insulator between them. Find the electric field strength at breakdown, if Young's modulus = 10000 (V.F/m2). and the relative permittivity is (36000 TT). If the…