SSC JE Electrical Engineering (Paper 2) 4 Dec 2023 Paper

With reference to PMMC instruments, which of the following statements are correct?
I. For PMMC instruments, the scale is not uniform.
Il. PMMC instruments can be used for AC as well as DC quantities.
III. In PMMC instruments, power consumption is low.
IV. PMMC instruments offer a high torque/weight ratio.