WorksheetsProtection Capabilities of Circuit Breakers and Safety Devices
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which component protects against short circuits and overloads, but not earth leakage?
a)
ELCB
b)
RCBO
c)
CB
d)
None
2.
Which device does NOT protect against short circuit?
a)
MCB
b)
CB
c)
ELCB
d)
RCBO
3.
Which component is commonly used in home distribution boards for overcurrent protection?
a)
RCBO
b)
MCB
c)
ELCB
d)
Contactor
4.
Which protection device typically does NOT include earth leakage detection?
a)
CB
b)
RCBO
c)
ELCB
d)
None
5.
Which device is best for full protection (short circuit, overload, earth leakage)?
a)
CB
b)
RCBO
c)
MCB
d)
ELCB
6.
What is the full name of CB?
a)
Central Breaker
b)
Circuit Breaker
c)
Current Breaker
d)
Control Breaker
7.
What is the full name of MCB?
a)
Master Control Breaker
b)
Modular Circuit Breaker
c)
Miniature Circuit Breaker
d)
Mechanical Circuit Breaker
8.
What does ELCB stand for?
a)
Earth Leakage Control Box
b)
Earth Load Circuit Breaker
c)
Electric Leakage Circuit Breaker
d)
Earth Leakage Circuit Breaker
9.
What is the full name of RCBO?
a)
Residual Current Breaker with Overload
b)
Reverse Circuit Breaker with Overload
c)
Residual Current Backup Overload
d)
Residual Control Box Overload
10.
If a fault causes current to leak to the ground, which device is specifically designed to detect and interrupt this flow?
a)
MCB
b)
CB
c)
ELCB
d)
None of the above
100 %