ELECTRICAL APPLIANCES
SECTION A
PART I
Answer any ten questions :
1. Fault in electric iron may be
(A) Earth fault only
(B) Short circuit fault only
(C) Open circuit fault only
(D) All of the above faults
2. Which of the following is generally used in a hot plate ?
(A) Rotary switch
(B) Timer
(C) Thermostat
(D) None of the above
3. Nichrome strip wound over a triangular mica plate type heating element is used in
(A) Automatic electric kettle
(B) Ordinary electric kettle
(C) Both (A) and (B)
(D) None of the above
4. Exhaust fan is used in
(A) A washroom
(B) A desert cooler
(C) A room cooler
(D) Both (A) and (B)
5. Processes like Soak, Wash, Rinse and Spin can be performed by
(A) Ordinary washing machine
(B) Semi-automatic washing machine
(C) Fully automatic washing machine
(D) None of the above
6. Thermostat control is used in
(A) Ordinary washing machine
(B) Automatic washing machine
(C) Both (A) and (B)
(D) None of the above
7. The motor generally used in domestic electric washing machine is
(A) Capacitor start capacitor run motor
(B) Reluctance motor
(C) Split-Phase motor
(D) None of the above
8. Defect in curler may be due to
(A) Defect in motor
(B) Defect in heating element
(C) Defect in cord
(D) Both (B) and (C)
Please click on below link to download CBSE Class 12 Electrical Appliances Boards 2020 Question Paper.