Module-7 Control Panel Wiring and Maintenance (2nd)

 

185 : Which colour is to be powder coated (painted) on a control panel as per IE rule?

A : Light blue
B : Siemens Gray
C : Yellow
D : Dark blue

186 : Which electrical items are to be fitted in a control panel?
A : Switches and indicators only
B : Bus bar only
C : Safety equipments ony
D : Switching, control, safety and measuring devices

187 : Which duty cycle of contactor used for the application of Crane,Lift,and hoist in AC?
A : AC 2
B : AC 4
C : DC 1
D : DC 2

188 : Which factor is to be considered while designing the control panel dimensions?
A : Height of panel
B : Width of panel
C : Length of panel
D : Swing area of cabinet doors

189 : Which is the amount of additional load to be considered before selecting the protective accessories for a motor in control panel?
A : 25%
B : 50%
C : 75%
D : 100%

190 : What is the name of switch?
A : Change over switch
B : Pole changing switch
C : Ammeter selector switch
D : Voltmeter selector switch

191 : What type of switch unsuitable for portable (or) mobile devices?
A : Push button switch
B : Pole changing switch
C : Mercury switch
D : Limit switch

192 : which is used with ammeter to measure high current in panel board?
A : Current Transformer
B : Control Transformer
C : Potential Transformer
D : Power Transformer

193 : Which switch is used to control the distance or angles of movement of any machine part or axis or object?
A : Mercury switch
B : Limit switch
C : Push button switch
D : Selector switch

194 : What is the name of accessory used in control panel?
A : Indication Lamp
B : Timer
C : Rectifier
D : Push button switch

195 : Which accessory is used in control panel to mount MCB, Contactor etc. without using screw?
A : Race way
B : DIN rail
C : Gromet
D : PVC channel

196 : What is the use of wire ferrule in control panel wiring?
A : Harnessing the cable
B : Insulating the cable
C : Easy identification of cable end
D : To protect the wire from heat

197 : What is the name of part marked as X in nylon cable tie?
A : Button
B : Head
C : Thimble
D : Pawl

198 : Which accessory is used to insulate and hold the cables, if they pass through punched or drilled hole in control panel?
A : Grommet
B : PVC channel
C : Wire clips
D : Wire sleeves

199 : Which is the minimum spacing between components and raceways in panel board if system voltage is 415V?
A : 50 mm
B : 100mm
C : 60 mm
D : 75 mm

200 : Which colour of earth wire is used in control panel to earth door and cabinet?
A : Red
B : Yellow
C : Blue
D : Green yellow

201 : Which test is to be done regularly in panel board with priority?
A : Main power contacts condition
B : Insulation resistance and earth continuity
C : MCB connection
D : Filter and cooling fan

202 : Which is the advantage of periodical maintenance of control panel?
A : Reduces power cost
B : Assured over loading
C : Ensure safety to the machine and operators
D : Helps continuos operation

203 : Which type of fault will occur if the insulation of cable is damaged?
A : Earth fault
B : Open circuit
C : Short circuit
D : High value series resistance fault

204 : Which is the purpose of third terminal in insulation tester?
A : To measure more quantity
B : To extend the range
C : To use as a earth tester
D : To get accurate reading

205 : What is the name of instrument used to find out open circuit fault in control panel?
A : Earth tester
B : Ohm meter
C : Megger
D : Wheatstone bridge

206 : Why it is recommended to run power and control circuit cables seperatly in control panel?
A : For easy Identification
B : To Avoid transfer of heat from power cable to control cable
C : To avoid leakage
D : To avoid short circuit

207 : What is the name of fault if line is break in power cable?
A : Open circuit
B : Short circuit
C : Earth fault
D : Earth leakage

208 : Which is the minimum value of insulation resistance between phase to earth terminal in electrical installation?
A : 10 MΩ
B : 100 MΩ
C : 10 kΩ
D : 1 MΩ

209 : Which type of fault light will glow dim and motor runs slowly in a electrical installation?
A : Open circuit
B : Earth leakage
C : High value series resistance fault
D : Short circuit

210 : What is the function of Residual Current Circuit Breaker in electrical Installation?
A : Protect from short circuit
B : Protect from over current
C : Protect from open circuit
D : Protect from earth leakage

211 : Which helps the maintenance electrician to trouble shoot a fault in control panel in absence of operation manual?
A : Trouble shooting flow chart
B : Maintenance schedule
C : Machine register
D : Machine maintenance card