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) None of These
(B) AM
(C) PM
(D) FM
3. Modern cordless phones use following for communication;
(A) FM
(B) None of These
(C) AM
(D) Spread spectrum techniques
4. The handset of cordless phones operate over following major frequencies bands;
(A) Two
(B) Three
(C) Four
(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) Both A & B
(B) Use digital Spread spectrum
(C) Better sound Quality
(D) None of These
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) 330m/1000ft
(B) 21km/7000ft
(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) 1000m/1500ft
(D) None of These
10. The cordless phones which operates over move secured
(A) 2.4 GHz
(B) 900 MHz
(C) 43-50 MHz
(D) None of These