Explain the grounds for winding up of a company by the National Company Law Tribunal (NCLT).

Section 271 of the Companies Act 2013 provides grounds for winding up of the company by NCLT. According to section 271, a company may be wound up by NCLT on a petition in following cases: If the company has, by special resolution, resolved that the company be wound up by the Tribunal; If the company has acted against the interests of the sovereignty and integrity of India, the security of the State, friendly relations with foreign States, public order, decency or morality; If on an application made by the Registrar or any other person authorized by the Central Government by notification under this Act, the Tribunal is of the opinion that the affairs of the company have been conducted in a fraudulent manner or the company was formed for fraudulent and unlawful purpose or the persons concerned in the formation or management of its affairs have been guilty of fraud, misfeasance or misconduct in connection therewith and that it is proper that it be wound up; If the company has made a default in filing with the Registrar its financial statements or annual returns for immediately preceding five consecutive financial years; or If the Tribunal is of the opinion that it is just and equitable that the company should be wound up.