Yes, you can have more than SIP. Also, you can diversify across asset classes like Equity, Debt, Gold etc.

Yes you can have any number of SIP's in same Asset class as well as Different Asset Class.

SIPs can be done in any kind of MF scheme. Also, as many SIPs as you want can be done (any number of them for any amount). Invest through SIPs in liquid/ ultra short or short term funds for your short term goals (between 0 to 2 years)

Invest through SIPs in bond funds for your medium term goals (between 2 to 7 years) 

and invest across diversified equity MFs for your long term needs (goals after at least 7 years).

All these goals (short, medium and long) can have multiple SIPs for the purpose of diversification (within an asset class)

You can different SIPs in the same as well as different asset classes

One can have more than one SIP for several reasons. If your SIPs are linked to certain goals, the tenure of goals would dictate the asset classes and number of such goals will dictate the number of SIPs. If the SIPs are for general wealth creation purpose , number of SIPs should be limited based on your asset allocation. It is advisavble to limit the overall numbers to 4-5 SIPs so that they are monitorable and do not lead to over-diversification.

Yes, you can have more than SIP. Also, you can diversify across asset classes like Equity, Debt, Gold etc.