Interview Qustions

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which plcs you have worked salary expectation what were the course contents what did you learn in instrumentation how to communicate bw plc & scada what have you done in scada what is DH+ What is universal gate overload relay about experience why starters are used What is thermocouple what is 5/40 what is response time difference between relay & plc plc block diagram drive circuit diagram level control example with a motor & level switch why do we use drive to start a motor how drive works how drive saves energy how much energy it saves in many industries star-delta starters are used why make a ladder logic to start or stop a motor with one push button without using counter same logic use counter but do not used ‘equal to’ block types of counters ladder logic of star-delta starter Major project whole description SCADA (Real time trending, historical trending) PLC Programming, holding, concept, Modicon HMI Instrumentation: RTD, TC, Load sensor, temp control, how it works sinking sourcing concept DOL starter pump operation what were you doing in sofcon salary previous company start delta DOL Addressing of Timer, counter start stop ladder logic application with timer

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motors, drives, dol-stardelta starters & logic diagrams related personal information HMI MMI Difference what is frequency relay & plc difference micrologix 1000 description Power electronics IGVT Rectifier-working 3 Phase power, SCR, DIAC, Thyristor Oscillator & invertor circuit Drives: working, Principle, advantages ac dc drives (internal concepts) Star Delta diagram ladder diagram of star delta ladder diagram of a pump running for 10 mins but gives 5 sec alarm before running diff bet KWH & KVAH What is power factor how to improve power factor what is the need to improve power factor what is power triangle. zener diode & its characteristics operational amplifier finding current across zener diode a fan (200w) & a bulb (200w) running for 10 hr/day. Calculate monthly bill what is AC Drive. Block diagram how to control speed using drives what are dc drives project info sensors & transmitters microprocessor programming more emphasis on communication skill What is thermocouple what is 5/40 what is response time which plcs you have worked salary expectation what were the course contents what did you learn in instrumentation how to communicate bw plc & scada what have you done in scada what is DH+ What is universal gate

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overload relay about experience why starters are used difference between relay & plc plc block diagram drive circuit diagram level control example with a motor & level switch Star Delta diagram ladder diagram of star delta ladder diagram of a pump running for 10 mins but gives 5 sec alarm before running diff bet KWH & KVAH What is power factor how to improve power factor what is the need to improve power factor what is power triangle. zener diode & its characteristics operational amplifier finding current across zener diode a fan (200w) & a bulb (200w) running for 10 hr/day Tell me something about yourself What is SCADA Which SCADA Software you have worked Which all PLCs you have worked, describe individually how many I/Os are there in micrologix Detailed description about the projects during training How to communicate between HMI & PLC, Which software is used for HMI Power & line diagrams of Star Delta Starters / DOL starters Make a program that counts 5 times, works for 5 sec & then s/w off & also use a reset button RTD, T/c, thermistor, proximity switches About college seminar, industrial training, experience etc. Diff between relay & contactor sourcing & sinking diff between micrologix & SLC Control the level of a tank by proportional control valve using analog level sensor define Analog & digital I/O Draw PLC Wiring Generate a pulse & count up to 10 pulses diff between RTD & T/C Load cell panel, base of the panel PLC Star delta

129. control & power diagram of star Delta starter then make ladder diagram for that 130. PNP & NPN Sensor difference 131. Volume of cylinder 132. Forwarding reversing of Motors 133. Drives connections to motor 134. Project during college 135. applications 136. control & power diagram of star Delta starter then make ladder diagram for that 137. PNP & NPN Sensor difference 138. Volume of cylinder 139. Forwarding reversing of Motors 140. Drives connections to motor 141. Project during college 142. applications 143. Project details 144. third yr seminar 145. summer training in third year 146. selection of plc 147. what is scada 148. DOL Star delta starter 149. HMI & Scada difference 150. what is protocol, why used, where used 151. VFD 152. RTD, Level sensor, flow sensor 153. torque vs speed characteristics 154. relay contactor, thermal overload relay 155. what is bus bar 156. protections in panel 157. how energy is save in drives 158. difference between sensor & transducer 159. HR General information 160. explain best part of your life 161. Star delta starter connections 162. turbine boilers (mechanical ) 163. contactor, relays 164. salary expectations 165. plc, 3 Ph motor working 166. NO NC Start Stop logics 167. 3 ph motor drawing using PLCs 168. Solenoid, PID, Control valve, RTD Relay 169. panel, base of the panel 170. PLC 171. Star delta 172. drive, formula of drive

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different types of motors level sensor how to test the level of an acid tank what is PLC Types of digital & analog input outputs rising edge star delta starter & its logical diagram PLC Programming logic regarding timer counter networking of plc to PLC Communication theory, practical scada: how to prep tag which drive have your worked, connections of of drives, practical 184. motor practical connections 185. all plc scada introduction 186. about your interest 187. how many programs have you completed during training 188. use timer counter and prepare a blinker 189. controller drive communication family background 190. Truth table of AND , OR gate 191. convert Hexadecimal 1FA (16) to binary 192. which metal is best conductor Aluminium or copper 193. Who was the first president of India 194. If 220 v dc is applied to primary of transformer, what will be the output 195. calculation of current from simple circuit diagram 196. What is rotor frequency if 1400, for a 4 pole motor 197. Self Introduction 198. Interest in subjects 199. Use of SCADA 200. Allen Bradley PLC & its types 201. one push button: I st time motor on, II time motor off, III time motor again runs 202. pump operation 203. transformer definition 204. drive & its benefits 205. which drive have you worked & what is the sl no 206. which all sensors you know How drive works, Calculate time in one pulse 207. Make a ladder diagram for 05 no. outputs with one proximity switch. A conveyor moves television sets. S/w on output 1 when televisions between 15-17 pass, 2 between 18 to 20, 3 between 25-30 & 4 when 35 no television sets pass 208. Star Delta starters & their power & control diagrams 209. Reversing & forwarding circuits of motors 210. On off, proportional & PID Controllers 211. Reading of Electrical Circuits

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Dg synchronization 3 phase Full wave rectifier thyristor control rectifier CCD of Star-delta, why & advantage double cage squirrel cage induction motor phase wound induction motor details transformer on load test, tape charging off load charging, difference between the two, how it works why star-delta starter is required star delta starter ladder logic what is scan time Explain the working operation of a motor, what are different types of motors difference between motor & transformer what is drive & how it works, types of drives what is its duty cycle. how energy is saved by drive. What are different basic parameters of drive RTD, Thermocouple, thermistor Difference between relay & contactor how contactor is connected to Plc. how many I/Os are there in micrologix1000 & simens s7-200 plc. what is protocol, what is Ethernet. What is the difference between the two. difference between RS 232 & RS 485. What is the difference between serial & parallelcommunication PLC wiring how current gets reduced in star-delta configuration how to design panel, range of switchgears & contactors components of s7-200 & 300 PLCs. Which type of CPU you worked in siemens & micrologix. difference between SCADA & HMI & Where are they used. Have you seen used anywhere. ladder diagram of a tank having low & high level sensor. Pump is off when water reaches to highlevel, pump is switched on when water level goes below low level. what is the principle of operation of servomotor. What is their use in industries. how will you change the mode of ops of a drive if drives is indicating overload, what should be done For increasing the frequency more than 60 hz which parameter need to be changed (according tocatalogue) how to connect p/b with drive name of drive you have worked Project details third yr seminar

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summer training in third year selection of plc what is scada DOL Star delta starter HMI & Scada difference what is protocol, why used, where used VFD RTD, Level sensor, flow sensor torque vs speed characteristics relay contactor, thermal overload relay what is bus bar protections in panel how energy is save in drives difference between sensor & transducer HR General information explain best part of your life DOL START Delta starter ladder logic rtd, tc, AC Drive block diagram PID applications level detection diagram personal information related to experience

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Why have you come for interview How can you prove in marketing field how will you handle pressure plc & drives star delta starter ladder logic without using timer (make a delay of 5 sec) without using a counter count 5 to start a motor push button to toggle what is scan time siemens modicon plc cables describe about ur project explain the difference between squirrel & PWIM Explain the operation of any motor which motor produces more torque & explain why what is drive voltage rating of SCR What is use of using SCR DO you know 120 deg or 180 deg mode of operation of a drive what is the use of capacitor in de-link system of drive convertor section draw bridge rectifier & explain why gate pulses are used in scr

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what is PLC SCADA HMI Diff bet HMI & SCADA what is voltage rating of PLC Processor what is synchronous speed what do you mean by a pole how many tags were there in scada diff between dol & star delta starter which protocol is used for communicating between PLC & scada Full form of DH+ Howmany inputs & outputs are there in Micrologix & SLC memory of Micrologix 1000 star delta logic load sensor RFID what is add & subtract block in micrologix 1000 what is position sensor load sensor flow sensors speed control of dc motor speed control of ac motor what is ac drive & what is dc drive what is braking push button as a toggle switch 4 way traffic light program what is timer & counter diff bet timer & counter final year project how many flags are used in Micrologix 1000 purpose of circuit breaker in panel what is HMI How we can change the preset value of timer through HMI DOL Starter Basic of electrical types of motor star delta connections, power circuit and control circuit Panel design control & power diagram of star Delta starter then make ladder diagram for that PNP & NPN Sensor difference Volume of cylinder Forwarding reversing of Motors Drives connections to motor Project during college applications sinking & sourcing RTD Allen Bradley plc connections

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level sensor Motor & drive experience regarding project forwarding reversing of conveyor DOL Star delta use of plcs Writing of a small program: when we press start p/b motor 1 starts, after 5 sec motor 2 starts, after 5 sec motor 3 starts. when we press stop p/b motor 1 stops, after 5 sec motor 2 stops & after 5 sec motor 3 stops. If there is problem with 2nd motor, third motor runs & first motor stops. If there is a problem with the third motor, I motor runs & second motor stops