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Q1. | Wheatstone bridge is suitable for low resistances. |

A. | TRUE [Wrong Answer] |

B. | FALSE [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ A high frequency series inverter consists of

a number of series inverters in series

a number of series inverters in parallel

a number of parallel inverters in parallel

a number of parallel inverters in series

⇒ In thermal ohm's law, temperature and power loss are analogous to

V and I respectively of ohm's law

I and V respectively of ohm's law

R and V respectively of ohm's law

I and R respectively of ohm's law

⇒ Holes and electrons move in opposite directions.

TRUE

FALSE

⇒ A voltage tripler circuit uses

2 diodes and 2 capacitors

3 diodes and 3 capacitors

2 diodes and 3 capacitors

3 diodes and 2 capacitors

⇒ Class C operation finds application in

RF power amplifiers

frequency multipliers

both (a) and (b)

neither (a) nor (b)

⇒ The voltage across the secondary of the transformer in a half wave rectifier (without any filter circuit) is 25 volts. The maximum voltage on the reverse biased diode will be

100 V

50 V

25 V

12.5 V

⇒ Waves of frequencies higher than 30 MHz penetrate the atmosphere.

TRUE

FALSE

⇒ The primary function of a clamper circuit is to

suppress variations in signal voltage

raise +ve half cycle to the signal

Lower -ve half cycle of the signal

introduce a dc level into an a.c. signal

⇒ A CMOS amplifier when compared to an N-channel. MOSFET, has the advantage of

higher cut off frequency

higher voltage gain

higher current gain

lower current drain from the power supply, there by less dissipation

⇒ The energy stored in a coil is 108 J. It is opened suddenly in 10 ms. The power dissipated instantaneously across the blades of switch is

108 W

1080 W

10800 W

108000 W

⇒ Three inductors each 30 mH are connected in delta. The value of inductance or each arm of equivalent star is

10 mH

15 mH

30 mH

90 mH

⇒ In PCM the amplitude levels are transmitted in a 7 unit code. Sampling frequency is 10 kHz. The bandwidth should be

5 kHz

35 kHz

70 kHz

5 MHz

⇒ A divide by 78 counter can be obtained by

6 numbers of mod-13 counters

13 numbers of mod-6 counters

one mod-13 counter followed by mod-6 counter

13 number of mod-13 counters

⇒ The range of life time carriers (electrons and holes) is

1 μ

*s*to 100 μ

*s*

1 nano sec to 1 μ

*s*

1 nano sec to hundreds of μ

*s*

none of the above

⇒ Laplacian of a scalar function V is

gradient of V

gradient of the gradient of V

divergence of V

divergence of the gradient of V

⇒ The equation sin (

*z*) = 10 has

no real or complex solution

exactly two distinct complex solutions

a unique solution

an infinite number of complex solutions

⇒ Charge needed within a unit sphere centred at the origin for producing a potential fie

12 p

_{c}

60 p

_{c}

120 p

_{c}

180 p

_{c}

⇒ A sequence detector is required to give a logical output of 1 whenever the sequence 1011 is detected in the incoming pulse stream. Minimum number of flip-flops needed to built the sequence detector is

4

3

1

2

⇒ In the circuit of figure, the switch is closed at

*t*= 0 with

*i*

_{L}(0) = 0 and V

_{C}(0) = 0. In the steady state n

_{c}equ

100

*v*

0

*v*

∞

- 100

*v*

⇒ A coil of resistance R and inductance L is connected in series with 5 μF capacitor. The source frequency is equal to resonance frequency and circuit current is 0.5 A. Another 5 F capacitor is connected in parallel with the above capacitor. The circuit current will be

0.5 A

more than 0.5 A

less than 0.5 A

0.5 A or less

⇒ The effect of lead resistance is important in measurement of

resistance of shunt

resistance of shunt winding

resistance of ammeter

both (a) and (c)

⇒ Which of the following identifiers is valid in Pascal?

`THETA`

`NUM `

`1 ST`

`$ BETA`

⇒ In a semi converter feeding a resistive load

the waveshapes of output voltage and output current are exactly similar

the waveshapes of output voltage and output current can not be similar

the waveshapes of output voltage and output current are similar only for low values of firing angle

the waveshapes of output voltage and output current may be similar or dissimilar

⇒ When signed numbers are used in binary arithmetic, which of the following has unique representation for zero?

Sign-magnitude

1's complement

2's complement

9's complement

⇒ For a given voltage four heating coils will give maximum heat when connected

in parallel

in series

with two parallel pairs in series

with one pair in parallel and the other two in series

⇒ If

*f*be the signal frequency and

_{s}*f*be the intermediate frequency then image frequency is given by

_{i}*f*+

_{s}*f*

_{i}*f*±

_{s}*f*

_{i}*f*± 2

_{s}*f*

_{i}*f*+ 2

_{s}*f*

_{i}⇒ In telephone systems the relation between load r, number of calls initiated during a specified interval λ and average duration of a call (

*h*) is

r = λ

*h*

r = λ

*h*

^{2}

λ = r

*h*

h = λr

⇒ The ac motor used in servo applications is

single phase induction motor

two phase induction motor

3 phase induction motor

synchronous motor

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | RC coupled amplifier | 1. | Very low drift |

B. | Tuned amplifier | 2. | Flat frequency response from zero frequency onwards |

C. | Chopper stabilized amplifier | 3. | Flat frequency response with upper and lower cut off frequency |

D. | DC amplifier | 4. | Peak in gain frequency response |

A-4, B-3, C-1, D-2

A-3, B-4, C-2, D-1

A-3, B-4, C-1, D-2

A-4, B-3, C-2, D-1

⇒ Examine the following statements

- Pneumatic systems are fire proof.
- Pneumatic systems are explosion proof.
- Hydraulic systems are explosion proof.
- Hydraulic systems are fire proof.

1 only

1 and 2 only

1 2, 3, 4

2, 3, 4 only