Wireman 2nd year mcq
Wireman – Semester 4 Module 7 – Control panel wiring and maintenance
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 nylone 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
Wireman – Semester 4 Module 7 – Control panel wiring and maintenance
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
Wireman – Semester 4 Module 8 – Estimation and costing of wiring
212 : Which is the full form of NE code?
A : National Energy Code
B : National Engineering Code
C : National Electricity Code
D : National employment Code
213 : Which is the name for calculating the cost of material and labour of electrical installation?
A : Estimation
B : Layout
C : Schedule
D : Specifications of materials
214 : How many power socket outlet are permitted in a power sub circuit as per IE rule?
A : 1
B : 2
C : 3
D : 4
215 : Which term defines that the ratio between minimum actual load to Installed load?
A : Depreciation Factor
B : Demand Factor
C : Diminishing Factor
D : Diversity Factor
216 : Which is the number of light and fan points recommended in a sub circuit as per IE rule in domestic wiring?
A : 12
B : 10
C : 8
D : 6
217 : How much percentage of total cost isadded to estimate as contingencies?
A : 20%
B : 15%
C : 10%
D : 5%
218 : Which is the recommended power for a lighting sub circuit as per IE rule in domestic wiring?
A : 800W
B : 1200W
C : 2000W
D : 3000W
219 : What is the height of horizontal run of cables as per IE code recommendation?
A : 2.5m
B : 3m
C : 2m
D : 1.5m
220 : Which is the location of distribution board in a domestic wiring installation?
A : Near to main door
B : Under stair case
C : Near to load center
D : In Portico
221 : Which is the size of G.I earth conductor to be connected in third terminal of wall sockets as per IE rule?
A : NO.16 SWG
B : NO.14 SWG
C : NO.10 SWG
D : NO.8 SWG
222 : Which connections the flexible cords is to be used?
A : Recessed conduit wiring
B : Pendant lamp
C : Air conditioner
D : Electric Iron
223 : Which is the minimum clearance must be kept between ceiling and plane of blade of a ceiling fan?
A : 150mm
B : 200mm
C : 275mm
D : 300mm
224 : Which type of light fitting should be used for outdoor lighting?
A : Water proof lighting
B : Direct lighting
C : Spot light
D : Indirect lighting
225 : Which type of switch is used,if the appliance rating is higher than 16A?
A : 16A single pole switch
B : 16A Two way switch
C : 6A SP switch
D : 32A Double pole switch
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