1. The value of voltage V1 in the network shown in Fig. Q. 1 is
Fig. Q.1
A) 0.92 V
B) 0.092 V
C) 0.98 V
D) 0.098 V
2. The Thevenin's impedance across the terminal AB of the network shown in Fig Q.2 is
Fig Q.2
A) 10/3 Ω
B) 20/9 Ω
C) 13/4 Ω
D) 11/5 Ω
3. In the RC circuit shown in Fig Q.3 the voltage across capacitor, 4 seconds after the switch is closed is
Fig. Q.3
A) 53.2 V
B) 75.6 V
C) 103.8 V
D) 120.0 V
4. For the signal flow graph shown in Fig Q.4 the overall transfer function C(s)/R(s) is given by
Fig Q.4
A) (G1+G2)/(1+G3)
B) (G1+G2)/(1-G3)
C) (G1+G2)G3
D) G1G3+G2
5. The loop transfer function, G(s) H(s) corresponding to the root locus shown in Fig Q.5 is
Fig Q.5
A) K(S-2)^2
S(S+3)
B) Ks(s-3)
(s+2)^2)
C) K .
(S(S-3)(S+2)^2)
D) K(s+2)^2
s(s-3)
6. For the network shown in Fig Q.6 Z(0)=3 and Z()=2. The value of R1 AND R2 will respectively be
Fig Q.6
A) 2,1 Ω
B) 1,2 Ω
C) 3,2 Ω
D) 2,3 Ω
7. Which of the following machine is preferred for charging the batteries?A) series generator
B) shunt motor
C) shunt generator
D) compound generator
8. The amplidyne is a cross field machine which is
A) fully compensated
B) half compensated
C) over compensated
D) under compensated
9. The modulation scheme that can work with a non-coherent receiver is
A) BPSK
B) BFSK
C) QPSK
D) BPSK and QPSK
10. The critical resistance of the d.c generator is the resistance of
A) armature winding
B) load
C) field winding
D) brushes
