1. Two paper speeds are necessary _______ per second for ECG recording
(A) 25 and 50 mm
(B) 10 and 20 mm
(C) 15 and 30 mm
(D) 50 and 100 mm
2. ECG stands for __________
(A) Emergency Cardio graph
(B) Electro Cardio graph
(C) Electro coronary graph
(D) None of these
3. In ECG lead selector, the electrodes are selected _______ according to the lead program
(A) One by one
(B) Two by two
(C) Three by three
(D) All chest leads
4. Amplifier is a circuit which is used to amplify the _______ signal in ECG machine
(A) Kidney
(B) Liver
(C) Heart
(D) Brain
5. __________ circuit is used to stop the chart transport motor while heart bio electric signal will not exist at input
(A) Amplifier
(B) Oscillator
(C) Auxiliary
(D) Feedback