1. Preheat oven to 350 degrees Fahrenheit (180 degrees Celsius).
2. Combine flour, sugar, and baking powder in a medium bowl.
3. In a second bowl, combine eggs, juice, and oil. Add liquid ingredients to dry ingredients and mix well.
4. Add the raisins and pour the batter into an 11×14-inch (28×35-centimeter) baking pan.