the junction near the anode is negatively biased and the one near the cathode is positevely biased.
Q.21:- In the two-wattneter nethod of neasurung power in a balanced threee-phase circuit, one wattmeter shows zero and thr other positve maximum. The lad powe factor is
(a) zero(b) 0.5(c) 0.866(d) 1.0
Q.22:- If the unit step response of a system is a unit impusle function, then the transfer function of such a system will be
(a) 1(b) 1/s(c) s(d) 1 / s²
Q.23:- The probability that a number selected at random between 100 and 999 (both inclusive will not contain the digit 7 is
(a) 16/25(b) (9/10)³(c) 27/75(d) 18/25
Q.24:- In the ciruit shown in the figure, N is a fintie gain amplifier with a gain of k, a very input impendance, and a very low output impedance. The input impendance of the feedback amplifier with the feedback Z connected, as shown will be
Z (1-1 / k)
Q.25:- A satellite carrying antenna system, transmitter, receiver and power supply is known as
Q.26:- In a virtual memory system, the address space specified by the address lines of the CCPU must than the secondary storage size.
Q.27:- Wires are made by