End Semester Exam - ESL 130 - Electrical Workshop

Using a high current fuse in a low current appliance is very

• safe

• Dangerous

• Necessary

• complicated

Five 2V cells are connected in parallel. The output voltage is

• 1 V

• 1.5 V

• 2 V

• 1.75 V

The objective of grounding or earthing is

• to provide as low resistance possible to the ground

• to provide as high resistance possible to the ground

• to provide flow of positive, negative and zero sequence currents

• None of the above

What is the current through an electrical appliance of rating 5 kW, 200 V. Can you use a fuse which is rated 8 A along with this appliance

• 25 A, Yes

• 2.5 A, Yes

• 25 A, No

• 2.5 A, No

A fuse is connected in _________ to the ______ wire

• Series, live

• Parallel, Neutral

• Parallel, live

• Series, Earth

MCB is a device that provides definite protection to the wiring installation and sophisticated equipment against

• overcurrent

• short circuit

• theft

• both a and b

Switch used for stair case wiring is _____

• One way switch

• Two way switch

• Push button switch

• Miniature Circuit Breaker

The SI unit of current is _______

• Ampere

• Henry

• Watt

• Volts

Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second is

• 9 times

• 1/3 times

• 1/9 times

• 3 times

A manually operating device used for opening and closing or for changing the connections of circuit is called as

• Relay

• Fuse

• Switch

• Holder