Limits at the lower levels are to allow for a learning curve for new users and to help discourage spammers. ',
Rediff! Answers employee Jane said;"These limits help new members get to know a bit more about Rediff! Answers before they start just asking and answering like crazy. While it may seem really restrictive sometimes, it can also help new members realize what questions are worth more to answers rather than just answering a bunch of polls. If you aren't already, be sure to vote on undecided questions also. Not only will this help good answers be rewarded, but it will also help you progress to the next level more quickly."
Each level has it's own limit:
level one - twenty a day
level two - forty a day
level three - sixty a day
level four - eighty a day
levels five, six, & seven have no daily limits