ISI SYMBOLS
Q:1 The electrical accessories and componts are always reprented by ISI symbols in electrical circuitsAns:1 ?
Q:2 The ISI symbols are used to identify the electrical compoents in the circuit or layout
Ans:2 ?
MULTIPE CHOICE QUESTIONS
Q:1 What is the expansion of BIS standard?
A: British lnstitute standards.
B: British investigation service.
C: Bureau of indian standards.
D: Bureau of lnstitute standards.
Ans: 1.(C) Bureau of indian standards
Q:2 What is the correct ISI symbol for heater?
Q:3 Which one is the correct symbol of chassis ground in the following symbols.
Ans:3 C ?
Q:4 What dose the ISI symbol represnt in the figure shown?
A. Brush on commutator.
B.Plug and socket.
C.Brush on slip ring
D.Socket with switch.
Ans C: Brush on slip ring.
Q:5 Which one is the ISI symbol of socket outlet used in layout?
Ans: D YUSUF
Q: 6 Which one is the ISI symbol of circuit breaker used in the circuit diagram?
Ans: B yusuf
MATCH THE FOLLOWING
Q:1. Match the electrical accessories with the ISI symbol.
Electrical accessories
1.Socket outlet 6A
2.bell switch
3.Ceiling rose
4.push-button switch
Ans:1. 1. [B] 2.[C] 3. [A] 4.[C]
Q: 2. match the winding of relays with their symbols winding
1.Permanent relay
2 .Polarised relay
3. Slow releasing relay
4.Relay with fixed polarity
5.Slow operating relay
Ans:2: 1.[D] 2.[C] 3.[A] 4,[C] 5.[B]
Q: 3.Match the relay coil representing its function /type with symbols
1. AC relay
2. a relay unaffected by AC
3. a DC relay
4. mechanically latched relay
5. a polarised relay
Ans:3. 1.[A] 2.[D] 3.[C] 4.[B] 5.[D]
Q: 4. Match the devices with their symbols devices
1.Device operated by counter
2.Bucholz's relay
3.device operated by liquid level
4.device operated by liquid flow
5.device operated by no of event
Ans:4. 1.[A] 2.[B] 3.[C] 4.[D] 5.[A]
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