61. As compared to a BJT amplifier, an amplifier made using a JEET is likely to have
62. The bandwidth of a Class C amplifier decreases when the
63. Consider a single stage tuned amplifier having 3 dB bandwidth of 100 kHz. Determine the bandwidth if two such single tuned amplifiers are cascaded:
64. The amplifier which retains the shape of the input signal at the output are called-
65. The circuit of the figure is an example of feedback of the following type
66. In a typical 555 astable multivibrator circuit, if RA = RB = 2.2 kΩ and C = 0.1 µF then the free-running frequency is:
67. Match List-I with List-II and select the correct answer using the options given below the lists:
List-I
List-II
a. RC coupling
1. Higher voltage gain & impedance matching
b. Inductive coupling
2. Ability to amplify dc and low frequency signals
c. Transformer coupling
3. Minimum possible non-linear distortion
d. Direct coupling
4. Low collector supply voltages can be used
| List-I | List-II |
| a. RC coupling | 1. Higher voltage gain & impedance matching |
| b. Inductive coupling | 2. Ability to amplify dc and low frequency signals |
| c. Transformer coupling | 3. Minimum possible non-linear distortion |
| d. Direct coupling | 4. Low collector supply voltages can be used |
68. The drain of an N-channel MOSFET is shorted to the gate such that VGS = VDS. The threshold voltage (VT) of MOSFET is 1 volt. If the drain current (ID) is 1 mA for VGS = 2 V, then for VGS = 3 V, the drain current ID is-
69. In the circuit shown in figure below, β for the BJTs is 99.
Assuming the thermal voltage to be 50 mV, the input resistance Ri is:
Assuming the thermal voltage to be 50 mV, the input resistance Ri is:
70. When a voltage divider biased amplifier has its Q-point near to the middle of the dc-load line, what is the maximum unclipped peak-to-peak output voltage?
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