In medium bowl, mix together yogurt, eggs, oil, feta and salt. Sift together flour and baking powder, slowly add the yogurt mixture and stir well. Pour into a well-greased 8x8 inch baking dish. Lightly sprinkle with paprika and caraway seeds. Bake in a preheated 400 degree oven for 20 minutes or until a toothpick comes out clean.