1. In cordless phone for reception and transmission used,
(A) 2 same frequencies
(B) 2 different frequencies
(C) One frequency
(D) None of These
2. The cordless phones use following for communication
(A) FM
(B) AM
(C) PM
(D) None of These
3. Modern cordless phones use following for communication;
(A) FM
(B) AM
(C) Spread spectrum techniques
(D) None of These
4. The handset of cordless phones operate over following major frequencies bands;
(A) Four
(B) Two
(C) Three
(D) None of These
5. The cordless phones which operate over 43-50 MHz band
(A) Poor Sound Quality
(B) None of These
(C) Both A & B
(D) Better sound Quality
6. The cordless phones which operate over 900MHz and 2.4GHz.
(A) Better sound Quality
(B) Use digital Spread spectrum
(C) None of These
(D) Both A & B
7. In modern cordless phones use band;
(A) 43-50MHz
(B) 900MHz
(C) 100MHz
(D) None of These
8. The cordless phones which operate over 43-50 MHz have range
(A) 21km/7000ft
(B) 330m/1000ft
(C) 1000m/1500ft
(D) None of These
9. The cordless phones which operate over 900 MHz have range
(A) 21km/7000ft
(B) 330m/1000ft
(C) None of These
(D) 1000m/1500ft
10. The cordless phones which operates over move secured
(A) None of These
(B) 900 MHz
(C) 43-50 MHz
(D) 2.4 GHz