TANCET2003(Q1toQ10)

TANCET (Questions from Question Paper for Year 2003)

1. An 8-ary BPSK is operating at a bit rate of 9 kbps. The required bandwidth of the system is
A)18 kHz
B)6 kHz
C)9 kHz
D)72 kHz

2. An input to a quantizer is sampled at a rate of 8 k samples/sec. The number of quantization levels is 512. The bit rate of the system is
A)  4096 bits/sec
B) 64bits/sec
C) 72 kbits/sec
D) 4 kbits/sec

3. An input to a delta modulator is at 10 k samples/sec. The bit rate of the output of the delta modulator is
A)  5 kbps
B) 30 kbps
C) 20 kbps
D) 10 kbps

4.The scheme that is popularly used is carrier synchronizing circuit is
A) Early Late Gate Synchronizer
B) PLL
C) Delay Locked Loop
D) Both (1) and (2)

5. Which of the following scheme requires minimum bandwidth?
A) Unipolar RZ 
B) Unipolar NRZ
C) Polar RZ
D) Manchester

6. SCRs with a rating of 1000 V are to be used in a string to handle 6 kV. The number of SCRs that should be used in series to get a minimum string derating factor of 0.2 is
A) 6 
B) 9
C) 8
D) 30

7. In a current source inverter
A) output voltage magnitude and its waveform depend on the nature of the load
B) output current magnitude and its waveform depend on the nature of the load
C) output voltage waveform alone depends on the nature of the load
D) output current waveform alone depends on the nature of the load

8.Topologically a four-quadrant chopper can be visualised as a
A) single phase fully controlled converter
B) single phase half controlled converter
C) half bridge serius resonant inverter
D) single phase bridge inverter

9. The interrupt that has the highest priority in 8085 is
A) RST 5.5
B) TRAP
C) RST 6.5
D) RST 7.5

10.Data items grouped together for storage purposes are called as
A) list
B) record
C) title
D) string