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Electrical Engineer Test Part-6

20 Questions - Developed by: Zeya - Developed on: 2019-03-09 - 5,899 taken - 6 people like it

Electrical Engineer Test Part-6 (V-1.7) (Question: 101-120)

1

45. The input resistance of CB configuration is measured constant ______

(b) IC
(c) Vcb
(d) Vce
(a) IB

2

46. The dynamic output resistance of transistor in CB configuration is ___ at constant IE.

(c) ∆VCB/∆IC
(a) ∆VEB/∆IE
(b) ∆VEB/∆IC

3

46. The dynamic output resistance of transistor in CB configuration is ___ at constant IE.

(a) ∆VEB/∆IE
(b) ∆VEB/∆IC
(c) ∆VCB/∆IC

4

45. Cascade amplifier is used because

A. High Voltage gain
B. High output impedance
C. High input impedance

5

46. Cascade amplifier used to reduce load effect, the input impedance will be

A. High
B. Low
C. Medium

6

47. Cascaded amplifier used to reduce load effect, the output impedance will be

B. Low
A. High
C. Medium

7

48. The output for the Cascade amplifier is (Confirm answer)

None
B. Output of the last stage
A. The output of the first stage

8

49. The load resistance of Cascade amplifier is (Confirm answer)

A. The resistance after the first stage
C. The resistance after the second stage
D. The resistance before the second stage
B. The resistance before the first stage

9

50. What is the low-pass filter?

A. It will let pass low frequencies? (or it blocks high frequency)
C. It will let pass a band of frequencies?
D. It will eliminate a band of frequencies?
B. It will let pass high frequencies?

10

51. What is the role of the Zener diode?

A. Rectification
B. Amplification
C. voltage regulation

11

52. Filter in active region

A. filters the signal
B. filters, amplifies and modulates
C. Filters and amplifies

12

53. Type of amplifier used at receiver in order to amplify the signal?

B. Differential Amplifier
None
A. Power amplifier

13

54. When using Zener diode for voltage regulation, the output waveform shape will be affected by:

B- Input current passing through the diode
A- Dynamic resistance of the diode
None

14

55. For an inverter op-amp, what will be the equivalent output resistance?

B) Infinity
C) 0
A) Relative forward resistance
E) None of the above
D) Same as the input resistance

15

56. The heat loss inside a straight conductor is 60J upon applying current I for 5s. if the resistance of the conductor is decease to half, and the same current is applied for 5s, what will be the heat dissipation:

B. 30J
D. 120J
C. 15J
A. 60J

16

57. Fan out logic gate is

B. Number of gate connect to output
A. Number of gate
None

17

58. Type of amplifier at transmitter?

None
B. Differential Amplifier
A. Power amplifier

18

59. Loading effect can be reduced in a system by using

D. Diff Amplifier
B. Inverted Amplifier
A. Integrator
C. Non - Inverted Amplifier

19

60. Transformer humming due to

None
A. Vibration in Lamination
B. vibration in oil

20

61. If fuse rate = 8 Ampere, what does mean?

B. Can’t pass current below 8 A
None
A. It will melt if current increased above 8 A

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