Revealing quantum contextuality using a single measurement device

In this paper we analyze the notion of measurement noncontextuality (MNC) and identify contextual scenarios which involve sequential measurements only a single device. We show that any noncontextual ontological model fails to explain statistics outcomes carefully constructed positive-operator-valued measure (POVM) executed sequentially on quantum system. The context arises from different configurations in device can be used. develop an inequality (NC) ontic model, construct situation involving Klyachko-Can-Binicio\ifmmode \check{g}\else \v{g}\fi{}lu-Shumovsky (KCBS) inequality. resultant arising violate our NC This generalized by incorporating arbitrary $n$-cycle contextuality inequalities $n=5$ corresponds KCBS bounds for various derived more easily using functional relationships between larger values $n$. makes it one simpler analyze.