159 : What is the minimum bus bar clearance between phases in medium voltage application?
A : 25 mm
B : 32 mm
C : 36 mm
D : 40 mm
160 : What is the maximum permissible voltage drop at the point of the commencement of supply at the consumers end for high and extra high voltage as per IE rule?
A : 12.5%
B : 8%
C : 5%
D : 3%
161 : How the cable is to be connected with the distribution boards as per IE rule?
A : By crimping lugs without cutting any cable strands
B : By crimping lugs with some strands cut off
C : By directly inserting the strands into terminals
D : By twisting the strands and inserting into terminals
162 : Which is used to protect the conductors that passing through walls in commercial wiring as per IE rules?
A : Wood batten
B : Rigid metal conduit
C : Flexible metal conduit
D : Flexible non metal conduit
163 : What is the full form ofLAN?
A : Load Area Network
B : Local Area Network
C : Local Aviation Network
D : Local Active Network
164 : Which is the inter processor distance of LAN?
A : Above 1000 km
B : 10 km to 1000 km
C : 1 km to 10 km
D : 0 to 1 km
165 : Which is the data transmission medium in LAN?
A : PVC cable
B : Armoured cable
C : Belted cable
D : Coaxial cable
166 : What is the characteristics of LAN?
A : Consist one computer only
B : Group of 2 or more computers in the same building
C : Group of computers in different building
D : Group of computers in different area
167 : What is electrical drive?
A : Electro mechanical device
B : Electrical device
C : Electronic device
D : Mechanical device
168 : Which is the application of electrical drives?
A : Agricultural pumps
B : Fabricating workshop
C : Water treatment plant
D : Electric traction
169 : Which is the advantage of AC drive?
A : Power and control circuit are simple
B : Speed and design ratios have upper limits
C : Produce a simulated wave form
D : Heavy windings required
170 : Which colour LED indicates the fault occurred in drives?
A : Green
B : Yellow
C : Red
D : Blue
171 : What is the expansion of UPS?
A : Uninterrupted Power System
B : Uninterrupted Power Supply
C : Uninterrupted Power Solution
D : Uninterrupted Power Section
172 : Which circuit diagram is illustrated?
A : ON line UPS
B : OFF line UPS
C : Bridge rectifier
D : Metal rectifier
173 : Which part is marked as in the block diagram ofOFF line UPS?
A : Reset switch
B : Change over switch
C : Control panel
D : Battery charger
174 : What is the relation between back up time and capacity of the battery of an UPS?
A : Capacity of battery increases back up time increases
B : Capacity of battery increases back up time decreases
C : Capacity of battery decreases back up time increases
D : Capacity of battery has no relations with back up time
175 : Which component is connected across the transformer winding of an UPS for protection from
lightning?
A : Diode
B : Transistor
C : Triode
D : Polyster capacitor
176 : Which electrical / electronic device requires ups?
A : Air conditioner
B : Micro wave oven
C : Computer
D : Television
177 : Why the battery is to be placed nearer to ups in ups wiring?
A : To minimise the length of cable
B : For safety reasons
C : To increase the life of battery
D : To reduce voltage drop
178 : What adjustment is to be done in commercial installation for interconnection of two or more UPS?
A : By connecting manually
B : By using a change over relay
C : By using rotary switch
D : By using ICDP switch
179 : How the capacity of an inverter is expressed?
A : Watt hour
B : Ampere
C : Volt ampere
D : Ampere hour
180 : Which wire is used to connect inverter and battery?
A : PVC 1.5 sqmm copper wire
B : Special auto wire
C : PVC 1.5 sqmm aluminium wire
D : PVC 2.5 sqmm copper wire
181 : How the neutral is provided in an inverter?
A : It is common for inverter output and AC mains
B : Separate neutral wire is provided
C : Neutral is provided for out put only
D : Neutral is provided for AC mains only
0 Comments