EWRB EXAMS QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++

EWRB EXAMS QUESTIONS AND ANSWERS WITH

COMPLETE SOLUTIONS VERIFIED GRADED A++

Question 1:

A new flexible chord has been fitted, which of the following insolation resistance test values would be

correct?



A. 10 MOhm

B. 0.5 Ohm

C. 0.5 MOhm

D. 1. Ohm


A. 10 MOhm


Question 2:

The maximum current a flexible cord can carry safely without overheating depends mainly on:



A. The type of supply, a.c. or d.c.

B. The cross-sectional area of the flexible cord conductors.

C. The colours of the flexible cord conductors.

D. The number of cores in the flexible cord.


B. The cross-sectional area of the flexible cord conductors.

, Question 3:

A 230V heater comprises two elements connected in series across the supply.

If one resistance becomes open-circuited, what is the voltage across the other resistance?



A. 0V

B. 400v

C. 690v

D. 230v


A. 0V


Question 4:

The symbol of a square within a square on a name-plate of an electrical appliance is used to indicate

that the appliance is double-insulated.

Which one of the following terms on an appliance nameplate would also indicate that the appliance is

double-insulated.



A. Class I

B. Class II

C. All- insulated

D. 240v


B. Class II


Question 5:

A switch controls two heating elements both of the same resistance. The settings that can be selected

on the switch are high, medium and low. When the high position is selected on the switch, it will