Hero Skill Innovation And Employability Program
- 1.To prevent a DC return between source and load, it is necessary to use
- A.
Resistor between source and load
- B.
Inductor between source and load
- C.
Capacitor between source and load
- D.
Either (a) or (b)
- 2.For a base current of 10 μA, what is the value of collector current in common emitter if βdc = 100
- A.
10 μA
- B.
100 μA
- C.
1 mA
- D.
10 mA
- 3.To protect the diodes in a rectifier and capacitor input filter circuit it is necessary to use
- A.
Surge resistor
- B.
Surge inductor
- C.
Surge capacitor
- D.
Both (a) and (b)
- 4.
If the input to the ideal comparator shown in the figure is a sinusoidal signal of 8 V (peak to peak) without any DC component, then the output of the comparator has a duty cycle of- A.
1/2
- B.
1/3
- C.
1/6
- D.
1/12
- 5.N a CE amplifier the input impedance is equal to the ratio of
- A.
Ac base voltage to ac base current
- B.
Ac base voltage to ac emitter current
- C.
Ac emitter voltage to ac collector current
- D.
Ac collector voltage to ac collector current
- 6.For a system to work, as oscillator the total phase shift of the loop gain must be equal to
- A.
90°
- B.
45°
- C.
270°
- D.
360°
- 7.The most widely used LC oscillator is
- A.
Hartley oscillator
- B.
Crystal oscillator
- C.
Colpitt's oscillator
- D.
Clapp's oscillator
- 8."Half-splitting" is
- A.
A means for nuclear fuel cells to produce electricity
- B.
A means of isolating a problem in a circuit
- C.
A means for reducing a high ac voltage to a low dc voltage
- D.
A means of limiting current in a circuit
- 9.If the resistance in a circuit with constant voltage increases, the current will
- A.
Increase
- B.
Decrease
- C.
Stay the same
- D.
None
- 10.
What is the power in the given circuit?
- A.
3.6 W
- B.
35 W
- C.
175 W
- D.
245 W
- 11.A battery's capacity to deliver power is measured in
- A.
Kwh
- B.
Ah
- C.
Mh
- D.
Vh
- 12.If current through a resistance is halved
- A.
The resistance is halved
- B.
The voltage is halved
- C.
The voltage doubles
- D.
None of the above
- 13.Ohm's law is a relationship between
- A.
Voltage, current, and time
- B.
Power, current, and resistance
- C.
Resistance, time, and current
- D.
Voltage, current, and resistance
- 14.The brake power of a diesel engine, keeping other parameters constant, can be increased by
- A.
Decreasing the density of intake air
- B.
Increasing the temperature of intake air
- C.
Increasing the pressure of intake air
- D.
Decreasing the pressure of intake air
- 15.The expansion of fuel in a four stroke cycle diesel engine
- A.
Starts at 15° before top dead centre and ends at 30° after top dead centre
- B.
Starts at top dead centre and ends at 30° after top dead centre
- C.
Starts at 15° after top dead centre and ends at 30° before bottom dead centre
- D.
May start and end anywhere
- 16.Reactors for propulsion applications are designed for
- A.
Any form of uranium
- B.
Natura uranium
- C.
Enriched uranium
- D.
Plutonium
- 17.The primary fuel used in nuclear power plants is
- A.
U235
- B.
U238
- C.
Pu239
- D.
Pu233
- 18.In which of the following are operational amplifiers (op-amps) used?
- A.
Oscillators
- B.
Filters
- C.
Instrumentation circuits
- D.
All of the above
- 19.For an op-amp having a slew rate SR = 5 V/ms, what is the maximum closed-loop voltage gain that can be used when the input signal varies by 0.2 V in 10 ms?
- A.
150
- B.
200
- C.
250
- D.
300
- 20.What is the level of the voltage between the input terminals of an op-amp?
- A.
Virtually zero
- B.
5 V
- C.
18 V
- D.
22 V
- 21.A three-stage op-amp can have a maximum phase lag of ________°.
- A.
-180
- B.
-90
- C.
-270
- D.
None of these
- 22.The summing amplifier contains an inverting amplifier.
- A.
True
- B.
False
- 23.Which of the following symptom is caused as a result of brake disc run out ?
- A.
Ineffectiveness of the brakes
- B.
Judder during braking
- C.
Localized wearing of the brake pads
- D.
Rapid wearing of the brake pads
- 24.The function of an alternator in an automobile is to
- A.
Supply electric power
- B.
Convert mechanical energy into electrical energy
- C.
Continually recharge the battery
- D.
Partly convert engine power into electric power
- 25.In a unit type body (frameless body) design, the sheet metal parts are welded together, forming a frame work to which outer skin is attached.
- A.
True
- B.
False
Questions: 30 | Attempts: 178 | Last updated: Mar 20, 2022
-
Sample QuestionThe energy Density of Conventional Lead acid Batteries are ----------that of Modern Lithium Ion Battery.
Questions: 41 | Attempts: 205 | Last updated: Mar 18, 2022
-
Sample QuestionWhen you wake up, what do you want to do in your journey?
Questions: 170 | Attempts: 76 | Last updated: Mar 19, 2022
-
Sample QuestionWhat would your weakness be?
Back to top