WorksheetsBengkel HV
Total questions: 10
Worksheet time: 6mins
Karl Fischer titration is mainly used to measure:
pH of a solution
Water content in a sample
Concentration of alcohol
Total dissolved salts
Which chemical is the key reagent in Karl Fischer titration?
Sodium hydroxide (NaOH)
Hydrochloric acid (HCl)
Iodine (I₂)
Sulfuric acid (H₂SO₄)
FTIR is commonly used in laboratories to:
Measure melting point of substances
Identify chemical compounds by their spectra
Determine density of a sample
Measure electrical conductivity
Which of the following is commonly used as an insulating material in power transformers?
Copper
Mineral oil
Aluminum
Steel
The main purpose of grounding in an electrical system is to:
Increase voltage supply
Provide a safe path for fault current
Reduce power losses
Strengthen the magnetic field
Which of the following is commonly used as a grounding electrode?
Wooden rod
Copper rod
Plastic pipe
Rubber sheet
If transformer insulation becomes weak or damaged, what is the most likely result?
Higher efficiency
Faster cooling
Stronger magnetic field
Electrical breakdown or failure
Overvoltages in power systems are mainly caused by:
Solar radiation
Earthquake
Lightning
Heavy rain
A device commonly used to protect insulation from overvoltage is:
Transformer
Surge arrester
Fuse
Circuit breaker
The selection of insulation level depends on:
Conductor size
Operating voltage
Cable length
Conductor color code
