Q.1: A sudden flow of very large current due to direct contact of a live and a neutral wire is called ____________.
c) electric fuse
Q.2: The full form of MCB is __________________.
a) Miniature Circuit Breaker
b) Minimum Circuit Breaker
c) Maximum Circuit Breaker
Q.3: Which of the following is not the effect of electric circuit ?
a) Heating effect
b) Cooling effect
c) Magnetic effect
Q.4: Robots use ____________ as an end effector for grasping the iron objects.
a) magnetic grippers
b) iron grippers
c) metal grippers
Q.5: In an electric bell, ______________ is fixed near the hammer.
a) metal bracket
c) metal gong
Q.6: Battery in which cells are connected in series, the negative terminal of one cell is connected to the ___________ terminal of the next cell.
c) Both ‘a’ and ‘b’
Q.7: The cylindrical coil of wire is called _____________.
b) electric circuit
Q.8: ______________ are used in motors that drive fans, mixers, washing machines, etc.
a) electric switch
Q.9: No electric current flows in a/an _____________ circuit.
Q.10: Greater the magnitude of current passed through a given wire, _________ will be the heat produced in it.
Q.11:Which of the following is an element of electric circuit ?
c) both ‘a’ and ‘b’
Q.12: An electric bulb works on the principle of _____________ of electric current.
a) heating effect
b) magnetic effect
c) chemical effect
Q.13: Before buying any electrical appliance, you should look for _________________.
a) product price
b) manufacturing date
c) ISI mark
Q.14: The full form of LED is ___________________.
a) Lime emitting diode
b) Light emitting dioxide
c) Light emitting diode
Q.15: Which of the following is an advantage of LEDs and CFLs ?
a) They are cheap
b) They are available in variety of colours.
c) They consume less energy and are long lasting.