Class 12 Electronics Chapter 6 Installation of a Switchboard Solutions English Medium As Per AHSEC New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters Class 12 Electronics Chapter 6 Installation of a Switchboard Question Answer and select need one. Class 12 Electronics Chapter 6 Installation of a Switchboard Notes Download PDF. AHSEC Class 12 Elective Electronics Question Answer English Medium.
Class 12 Electronics Chapter 6 Installation of a Switchboard
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. AHSEC Class 12 Elective Electronics Textual Solutions are part of All Subject Solutions. Here we have given AHSEC Class 12 Electronics Textbook Solutions English Medium for All Chapters, You can practice these here.
Installation of a Switchboard
Chapter: 6
| Check Your Progress |
A. Multiple choice questions:
1. Which of the following is not a type of switchboard?
(a) SB1.
(b) SB2.
(c) SB3.
(d) SB4.
Ans: (d) SB4.
2. Which of the following is a type of switchboard?
(a) SB1.
(b) SB2.
(c) SB3.
(d) All of the above.
Ans: (d) All of the above.
3. In which switchboard is a service section is deeper than the distribution section?
(a) SB1.
(b) SB2.
(c) SB3.
(d) SB2 and SB3.
Ans: (a) SB1.
4. Which of the following components are used in switchboards?
(a) Frame.
(b) Overcurrent protective devices.
(c) Buses.
(d) All of the above.
Ans: (d) All of the above.
5. The most commonly used switchboard size is ___________.
(a) 90 inches high and 38 inches wide.
(b) 100 inches high and 40 inches wide.
(c) 150 inches high and 50 inches wide.
(d) 60 inches high and 45 inches wide.
Ans: (a) 90 inches high and 38 inches wide.
6. Handle extension is used with ___________.
(a) busbar.
(b) busway.
(c) MCB trip.
(d) switchgear.
Ans: (c) MCB trip.
7. Which of the following switchboard is front and rear aligned?
(a) SB1.
(b) SB2.
(c) SB2.
(d) All of the above.
Ans: (b) SB2.
B. Fill in the blanks:
1. Switchboards are generally accessible from the ___________________ as well as the _________________.
Ans: Front, rear.
2. A typical switchboard frame is _________________ high and _________________ wide.
Ans: 90 inches, 38 inches.
3. Horizontal buses are used to distribute power to each _________________ section.
Ans: Switch board.
4. Vertical buses are used to distribute power via overcurrent devices to the _________________.
Ans: Load devices.
5. A bus duct entrance can be used when _________________ is used instead of cables.
Ans: Metal bus.
C. State whether the following statements are True or False:
1. A handle extension allows more leverage to be applied to the circuit breaker handle.
Ans: True.
2. SB1 switchboards are designed to be used in an application where space is a consideration.
Ans: True.
3. SB2 switchboards may be mounted against a wall.
Ans: False.
4. SB3 switchboards are front and rear aligned.
Ans: False.
5. A switchboard is a large single panel, frame, or assembly of panels.
Ans: True.
6. Splice plates are used to join the horizontal busbars and switchboard sections.
Ans: True.
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