MATH 1ST YEAR 4TH TEST

What is the boiling point of aluminium?

• 1897°C

  
  

• 2519°C

• 2469°C

• 660°C

What is the area of a square whose side is 18 cm?

• 26 cm2

  
  

• 36 cm2

• 72 cm2

• 324 cm

What is the side of a square whose area is 625 mm2?

• 15 mm

  
  

• 20mm

• 25mm

• 30mm

What is the primeter of scalene. Triangle having sides of 40mm, 20mm and 28mm?

• 68 mm

• 78 mm

• 88 mm

• 98 mm

How many hours will take for a 100 watts bulb to consume 1 kwh energy? W = 1 Kwh P = 100 Watts t = _____Hours

• 10 hours
  

• 12 hours

• 18 hours

• 24 hours

What is the formual for induced emf?

• B2L sinq volts

  
  

• BL sinq volts

  
  

• BLV sinq volts

  
  

• B2V sinq volts

  
  

Which is the unit electrical power?

• Volts
  

• Ohms

• Watts

• Ampere

What is the unit of intensity of magnetic field?

• wb/m

  
  

• m/wb

  
  

• Hertz

  
  

• Coloumb

How much watt second in 1 watt hour?

• 1000 watt sec
  

• 2000 watt sec
  

• 3600 watt sec
  

• 4000 watt sec
  

What is the resistance of an electric iron if the rating of electric iron is 220 V and 500 watts?

• 94.8 ohms
  

• 95.8 ohms
  

• 96.8 ohms
  

• 97.8 ohms