1. PN function diode
2. a barium and strontium oxide coated cathode
3. accelerating anodes
4. post-accelerating anodes
post-accelerating anodes
1. between pre-accelerating and accelerating anodes
2. after accelerating anode
3. before pre-accelerating anode
4. none of these
between pre-accelerating and accelerating anodes
1. 0.5 cycle
2. 2.5 cycles
3. 5 cycles
4. 10 cycles
2.5 cycles
1. triangular wave
2. diagonal line
3. sine wave
4. circle
diagonal line
1. aqueous solution of araphite
2. sweep voltage
3. secondary emission electrons
4. none of these
aqueous solution of araphite
1. An ordinary, oscilloscope with high frequency sweep generator
2. Dual beam oscilloscope
3. Dual trace oscilloscope
4. Storage oscilloscope
Storage oscilloscope
1. VTVM
2. Cathode ray oscilloscope
3. Moving iron voltmeter
4. Digital multimeter
Cathode ray oscilloscope
1. 1
2. 2
3. 3
4. 4
3
1. 400 Hz
2. 2500 Hz
3. 4000 Hz
4. 5000 Hz
2500 Hz
1. star
2. delta
3. series
4. parallel
parallel