Noun. (plural security blankets). 1  A blanket that one uses to have a secure feeling or reduced anxiety, usually in the early years of life: Linus van Pelt had a famous security blanket. 2  Any object one uses to have a sense of security or reduced anxiety.
The time required for the current flowing in the LR series circuit to reach its maximum steady state value is equivalent to about 5 time constants or 5Ï. This time constant Ï, is measured by Ï = L/R, in seconds, were R is the value of the resistor in ohms and L is the value of the inductor in Henries.
06/04/2012 7:56 AM. Heating and cooling time constants are generally given by the motor manufacturer. This is the time required by the motor to reach 63.2% of its steady state temperature T when run with full load. Heating time constant (t) is given by the formula (1-1/e) T= (1-1/2.718) T= 0.632T.